ClassyFire: Listing 4825 chemical categories

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Name	ChemOnt ID	Description
B-type proanthocyanidins	CHEMONTID:0004818	Proanthocyanidins, which are characterized by the presence of two or more flavonoid units linked to each other only by either one 4->6, one 4->8, or one 8->8 CC-bond.
b'-hydroxy-alpha,beta-unsaturated ketones	CHEMONTID:0003673	Alpha,beta-unsaturated ketones that carry a hydroxyl group at the beta'-position.
Bacteriohopanoids	CHEMONTID:0001826	Bacterial terpenoids structurally characterized by a C30 skeleton, which is usually conjugated to a C5 (usually hydroxylated) unit linked by a carbon-carbon bond.
Bactoprenol diphosphates	CHEMONTID:0003860	Polyprenyl compounds consisting of a diphosphate group substituted by a bactoprenyl moiety.
Bactoprenol monophosphates	CHEMONTID:0003859	Polyprenyl compounds consisting of a monophosphate group substituted by a bactoprenyl moiety.
Bactoprenols	CHEMONTID:0003858	Compounds consisting of a (un-) substituted bactoprenyl group, which is a C-55 isoprenoid alcohol obtained by condensation of 10 unsaturated isoprene units a one saturated isoprene unit.
Bakkenolides	CHEMONTID:0002045	Sesquiterpene lactones containing a spiro[indene-2,3'-oxolane]-2'-one backbone.
Barbituric acid derivatives	CHEMONTID:0000292	Compounds containing a perhydropyrimidine ring substituted at C-2, -4 and -6 by oxo groups.
Batrachotoxins and derivatives	CHEMONTID:0000385	Potent cardiotoxic and neurotoxic alkaloids containing a C21-steroid backbone. They have been characterized from skin extracts of different frog species. The batrachotoxins have a homomorpholine ring at the steroidal CD-ring junction, a 3,9-hemiketal bridge and, in some cases, a 20beta-2,4-dialkylpyrrole-3-carboxylate moiety.
Benzacridines	CHEMONTID:0003017	Organic heterocyclic compounds with a structure characterized by a benzene ring fused to an acridine ring system.
Benzaldehydes	CHEMONTID:0001345	Organic compounds containing a benzene ring with a formyl substituent.
Benzamides	CHEMONTID:0000178	Organic compounds containing a carboxamido substituent attached to a benzene ring.
Benzanilides	CHEMONTID:0004713	Aromatic compounds containing an anilide group in which the carboxamide group is substituted with a benzene ring. They have the general structure RNC(=O)R', where R,R'= benzene.
Benzarsazines and derivatives	CHEMONTID:0002103	Polycyclic aromatic compounds containing a benzene ring fused to a 1,4-azarsine ring.
Benzarsoles	CHEMONTID:0000300	Organic compounds containing a benzene ring fused to an arsole ring (five member ring containing an arsenic atom, 4 carbon atoms, and two double bonds).
Benzazepines	CHEMONTID:0000293	Organic compounds containing a benzene ring fused to an azepine ring (unsaturated seven-membered heterocycle with one nitrogen atom replacing a carbon atom).
Benzazocines	CHEMONTID:0004007	Organic compounds containing the benzazocine ring system, which consists of a benzene ring bound to an azocine ring.
Benzene and substituted derivatives	CHEMONTID:0002279	Aromatic compounds containing one monocyclic ring system consisting of benzene.
Benzenecarbothioic S-acids	CHEMONTID:0004355	Aromatic compounds containing a benzene ring that carries a carbothioic S-acid group.
Benzenediols	CHEMONTID:0001286	Organic compounds containing two hydroxyl groups attached to a benzene ring.
Benzenesulfonamides	CHEMONTID:0000031	Organic compounds containing a sulfonamide group that is S-linked to a benzene ring.
Benzenesulfonate esters	CHEMONTID:0004309	Arenesulfonate esters that result from the formal condensation of the hydroxy group of an alcohol, enol, phenol or heteroarenol with benzenesulfonic acid.
Benzenesulfonic acids and derivatives	CHEMONTID:0000032	Organic compounds containing a sulfonic acid or a derivative thereof that is linked to a benzene ring.
Benzenesulfonyl chlorides	CHEMONTID:0004234	Aromatic compounds containing a benzenesulfonyl group, where the sulfonyl moiety is singly boned to a chloride atom.
Benzenesulfonyl compounds	CHEMONTID:0004233	Aromatic compounds containing a benzenesulfonyl group, which consists of a monocyclic benzene moiety that carries a sulfonyl group.
Benzenesulfonyl halides	CHEMONTID:0004308	Aromatic compounds containing a benzenesulfonyl group, where the sulfonyl moiety is singly boned to an halogen atom.
Benzenetriols and derivatives	CHEMONTID:0001310	Organic compounds containing three hydroxyl groups attached to a benzene ring.
Benzenoids	CHEMONTID:0002448	Aromatic compounds containing one or more benzene rings.
Benzidines	CHEMONTID:0003955	Organic compounds containing the benzidine skeleton, made up of a biphenyl ring system substituted at the 4- and 4'-positions with a unsubstituted amine group.
Benzimidazole ribonucleosides and ribonucleotides	CHEMONTID:0000663	Nucleosides with a structure that consists of an imidazole moiety of benzimidazole is N-linked to a ribose (or deoxyribose). Nucleotides have a phosphate group linked to the C5 carbon of the ribose (or deoxyribose) moiety.
Benzimidazoles	CHEMONTID:0000294	Organic compounds containing a benzene ring fused to an imidazole ring (five member ring containing a nitrogen atom, 4 carbon atoms, and two double bonds).
Benzisoxazoles	CHEMONTID:0002332	Aromatic compounds containing a benzene ring fused to an isoxazole ring. Isoxazole is five-membered ring with three carbon atoms, and an oxygen atom next to a nitrogen atom.
Benzisoxazolones	CHEMONTID:0002333	Aromatic compounds containing a benzene ring fused to an isoxazolone moiety.
Benzo-1,2-dioxanes	CHEMONTID:0002700	Heterocyclic compounds containing a benzene ring fused to a 1,2-dioxane ring.
Benzo-1,2,3-triazines	CHEMONTID:0004659	Organic compounds containing a 1,2,3-triazine ring fused to a benzene ring.
Benzo-1,3-dioxanes	CHEMONTID:0002701	Heterocyclic compounds containing a benzene ring fused to a 1,3-dioxane ring.
Benzo-1,4-dioxanes	CHEMONTID:0002702	Heterocyclic compounds containing a benzene ring fused to a 1,4-dioxane ring.
Benzo-2,3-dioxanes	CHEMONTID:0002703	Heterocyclic compounds containing a benzene ring fused to a 2,3-dioxane ring.
Benzo-m-dioxins	CHEMONTID:0001383	Organic compounds containing a benzene ring fused to a 1,3-dioxin ring.
Benzo-o-dioxins	CHEMONTID:0001382	Organic compounds containing a benzene ring fused to a 1,2-dioxin ring.
Benzo-p-dioxins	CHEMONTID:0001379	Organic compounds containing a benzene ring fused to a 1,4-dioxin ring.
Benzo[c]quinolizin-3-ones	CHEMONTID:0004422	Aromatic organonitrogen heterocyclic compounds containing a benzo[c]quinolizine ring system, which carries an oxo group at the 3-position.
Benzo[f]quinolin-3-ones	CHEMONTID:0004423	Aromatic organonitrogen heterocyclic compounds that contain a benzo[f]quinoline ring system carrying an oxo group at the 3-position.
Benzochromones	CHEMONTID:0001736	Organic compounds containing a benzene ring fused to the benzene moiety of chromone (1,4-benzopyrone).
Benzocycloheptapyridines	CHEMONTID:0002351	Aromatic compounds containing a benzene ring and a pyridine ring fused to a seven membered carbocycle.
Benzodiazepines	CHEMONTID:0000295	Organic compounds containing a benzene ring fused to either isomers of diazepine(unsaturated seven-member heterocycle with two nitrogen atoms replacing two carbon atoms).
Benzodiazines	CHEMONTID:0004789	Aromatic heterocyclic compounds containing a benzene ring fused to a diazine ring. The diazine ring is an analogue of benzene, where two carbon atoms are replaced by nitrogen atoms.
Benzodifurans	CHEMONTID:0002740	Organic heterocyclic compounds containing a to furan rings fused to a central benzene ring. They can be grouped in angular and linear benzodifurans.
Benzodioxanes	CHEMONTID:0002699	Heterocyclic compounds containing a benzene ring fused to a dioxane ring. Dioxane a six-member saturated ring of two oxygen atoms and four carbon atoms.
Benzodioxinopyrroles	CHEMONTID:0002107	Polycyclic aromatic compounds containing a pyrrole ring fused to the dioxin ring of a benzo-p-dioxin.
Benzodioxins	CHEMONTID:0002100	Organic compounds containing a benzene ring fused to a dioxin ring. Dioxin a six-membered unsaturated ring of two oxygen atoms and four carbon atoms.
Benzodioxoles	CHEMONTID:0000296	Organic compounds containing a benzene ring fused to either isomers of dioxole. Dioxole is a five-membered unsaturated ring of two oxygen atoms and three carbon atoms.
Benzodithiins	CHEMONTID:0002804	Organic heterocyclic compounds containing a benzene ring fused to a dithiin ring. Dithiin is an unsaturated six-member heterocycle containing four carbon atoms, two sulfur atoms and two double bonds.
Benzofuran-2-C-glycosides	CHEMONTID:0003497	Benzofurans that a C-glycosylated at the 2-position. Benzofurans are organic compounds containing a benzene ring fused to a furan.
Benzofuran-2-O-glycosides	CHEMONTID:0003498	Benzofurans that a O-glycosylated at the 2-position. Benzofurans are organic compounds containing a benzene ring fused to a furan.
Benzofuran-5-C-glycosides	CHEMONTID:0003499	Benzofurans that a C-glycosylated at the 5-position. Benzofurans are organic compounds containing a benzene ring fused to a furan.
Benzofuran-5-O-glycosides	CHEMONTID:0003500	Benzofurans that a O-glycosylated at the 2-position. Benzofurans are organic compounds containing a benzene ring fused to a furan.
Benzofuranones	CHEMONTID:0001578	Organic compounds containing a benzene ring fused to a furanone.
Benzofurans	CHEMONTID:0000301	Organic compounds containing a benzene ring fused to a furan. Furan is a five-membered aromatic ring with four carbon atoms and one oxygen atom.
Benzofuranyl 5-alkylsulfonates	CHEMONTID:0004672	Polycyclic aromatic compounds that contain a benzofuran ring system, which is O-substituted at the 5-position with an alkylsulfonate group.
Benzoic acid esters	CHEMONTID:0001350	Ester derivatives of benzoic acid.
Benzoic acids	CHEMONTID:0002565	Organic Compounds containing a benzene ring which bears at least one carboxyl group.
Benzoic acids and derivatives	CHEMONTID:0000176	Organic compounds containing a carboxylic acid substituent attached to a benzene ring.
Benzoins	CHEMONTID:0001331	Organic compounds containing a 1,2-hydroxy ketone attached to two phenyl groups.
Benzoisochromanequinones	CHEMONTID:0002355	Benzo derivatives of isochromanequinones. Isochromanequinones are structurally characterized by a quinone fused to an isochromane, and forming a naphtho[2,3-c]pyran-6,9-dione skeleton.
Benzomorpholines	CHEMONTID:0002108	Polycyclic aromatic compounds containing a benzene ring fused to a morpholine ring.
Benzonitriles	CHEMONTID:0001530	Organic compounds containing a benzene bearing a nitrile substituent.
Benzophenanthridine alkaloids	CHEMONTID:0002665	Polycyclic alkaloids with a structure based on the benzo[c]phenanthridine skeleton. They derived from tetrahydroprotoberberine precursors by oxidation of the C6-N bond followed by cyclisation of C6 on to position 13.
Benzophenones	CHEMONTID:0000120	Organic compounds containing a ketone attached to two phenyl groups.
Benzopyrans	CHEMONTID:0000123	Organic compounds containing a benzene ring fused to a pyran ring. Pyran a six-membered heterocyclic, non-aromatic ring, made up of five carbon atoms and one oxygen atom and containing two double bonds.
Benzopyrazoles	CHEMONTID:0001629	Organic compounds containing a benzene ring fused to a pyrazole ring. Pyrazole is a 5-membered ring consisting of three carbon atoms and two adjacent nitrogen centers.
Benzopyrenes	CHEMONTID:0000316	Organic compounds containing a benzene fused to a pyrene(benzo[def]phenanthrene) ring system.
Benzoquinolines	CHEMONTID:0001908	Organic compounds containing a benzene fused to a quinoline ring system.
Benzoquinones	CHEMONTID:0002384	Organic compounds containing a benzene ring that carries two ketone group at the 1- and 4-positions (cyclohexa-2,5-diene-1,4-dione).
Benzothiadiazines	CHEMONTID:0000308	Organic compounds containing a benzene fused to a thiadiazine ring (a six-member ring with two nitrogen atoms and a sulfur atom).
Benzothiadiazoles	CHEMONTID:0002323	Heterocyclic aromatic compounds containing a benzene ring fused to a thiadiazole ring. Thiadiazole is a five-membered aromatic heterocycle made up of one sulfur atom and two nitrogen atoms.
Benzothiazepines	CHEMONTID:0000317	Organic compounds containing a benzene fused to a thiazepine ring (a seven-membered ring with a nitrogen atom and a sulfur atom replacing two carbon atoms).
Benzothiazines	CHEMONTID:0000309	Organic compounds containing a benzene fused to a thiazine ring (a six-membered ring with four carbon atoms, one nitrogen atom and one sulfur atom).
Benzothiazoles	CHEMONTID:0000311	Organic compounds containing a benzene fused to a thiazole ring (a five-membered ring with four carbon atoms, one nitrogen atom and one sulfur atom).
Benzothiepins	CHEMONTID:0000231	Organic compounds containing a benzene fused to a thiepine ring (a seven-membered ring with six carbon atoms and one sulfur atom).
Benzothiophenes	CHEMONTID:0000312	Organic compounds containing a benzene fused to a thiepine ring (a five-membered ring with six carbon atoms and one sulfur atom).
Benzothiopyrans	CHEMONTID:0003412	Organic heterocyclic compounds containing a benzene ring fused to a pyran ring. Pyran a six-membered heterocyclic, non-aromatic ring, made up of five carbon atoms and one oxygen atom and containing two double bonds.
Benzotriazine organothiophosphates	CHEMONTID:0004660	Aromatic compounds containing a benzo-1,2,3-triazine, which is substituted by an organothiophosphate group at the 3-position. Their general structure is R-CSP(=S)(OR')OR'', where R=benzo-1,2,3-triazine, R',R\" = any atom.
Benzotriazole ribonucleosides and ribonucleotides	CHEMONTID:0001867	Nucleosides with a structure that consists of an imidazole moiety of benzotriazole is N-linked to a ribose (or deoxyribose). Nucleotides have a phosphate group linked to the C5 carbon of the ribose (or deoxyribose) moiety.
Benzotriazoles	CHEMONTID:0000315	Organic compounds containing a benzene fused to a triazole ring (a five-membered ring with two carbon atoms and three nitrogen atoms).
Benzotropolones	CHEMONTID:0004804	Organic aromatic polycyclic compounds containing a benzene ring fused to a tropolone.
Benzoxadiazoles	CHEMONTID:0001930	Organic compounds containing a benzene fused to an oxadiazole ring (a five-membered ring with two carbon atoms, one nitrogen atom, and one oxygen atom).
Benzoxanthenes	CHEMONTID:0003483	Organic compounds containing a benzene ring fused to a xanthene ring system. Xanthene is a tricyclic compound made up of two benzene rings linearly fused to each other through a pyran ring.
Benzoxathiins	CHEMONTID:0002059	Organic compounds containing a benzene fused to an oxathiin ring (a six-membered aliphatic ring with four carbon atoms, one oxygen atom, and one sulfur atom).
Benzoxathioles	CHEMONTID:0001875	Organic compounds containing a benzene fused to an oxathiole ring (a five-membered ring with four carbon atoms, one oxygen atom, and one sulfur atom).
Benzoxazepines	CHEMONTID:0000319	Organic compounds containing a benzene fused to an oxazepine ring (a seven-membered ring with four carbon atoms, one oxygen atom, and a nitrogen atom).
Benzoxazines	CHEMONTID:0001396	Organic compounds containing a benzene fused to an oxazine ring (a six-membered aliphatic ring with four carbon atoms, one oxygen atom, and one nitrogen atom).
Benzoxazinones	CHEMONTID:0001437	Organic compounds containing a benzene fused to an oxazine ring (a six-member aliphatic ring with four carbon atoms, one oxygen atom, and one nitrogen atom) bearing a ketone group.
Benzoxazoles	CHEMONTID:0000302	Organic compounds containing a benzene fused to an oxazole ring Oxazole is five-membered aromatic ring with a nitrogen and an oxygen atoms at the 1- and 3-position, respectively.
Benzoxazolines	CHEMONTID:0000006	Organic compounds containing a benzene ring fused to an oxazoline ring. Oxazoline is five-membered unsaturated ring with a nitrogen atom and an oxygen atom at the 1- and 3-position, respectively. Additionally, it contains two double bonds.
Benzoxazolones	CHEMONTID:0001973	Organic compounds containing a benzene fused to an oxazole ring (a five-member aliphatic ring with three carbon atoms, one oxygen atom, and one nitrogen atom) bearing a ketone group.
Benzoxepines	CHEMONTID:0001910	Organic compounds containing a benzene ring fused to an oxepine ring (an unsaturated seven-membered heterocycle with one oxygen atom replacing a carbon atom).
Benzoyl derivatives	CHEMONTID:0000321	Organic compounds containing an acyl moiety of benzoic acid with the formula (C6H5CO-).
Benzoyl peroxides	CHEMONTID:0004112	Organic compounds containing two benzoyl groups O-linked to each other via a peroxide group. Their skeleton has the general formula [C6H5C(O)]2O2.
Benzoylcyclohexane-1,3-diones	CHEMONTID:0004673	Alkyl-phenylketones where the alkyl group is a cyclohexane 1,3-dione.
Benzoylindoles	CHEMONTID:0001753	Organic compounds containing an indole attached to a benzoyl moiety through the acyl group.
Benzoylpyrazoles	CHEMONTID:0004704	Aromatic compounds containing a benzoyl group substituted with a pyrazole ring.
Benzyl alcohols	CHEMONTID:0000033	Organic compounds containing the phenylmethanol substructure.
Benzyl alkyl sulfoxides	CHEMONTID:0004630	Organosulfur compounds that contain a sulfoxide group substituted by a benzyl group, and an alkyl group. They have the general structure RS(=O)R' ( R=benzyl, R'=alkyl).
Benzyl bromides	CHEMONTID:0003979	Organic compounds containing a benzene skeleton substituted with a bromomethyl group.
Benzyl chlorides	CHEMONTID:0003980	Organic compounds containing a benzene skeleton substituted with a chloromethyl group.
Benzyl cyanides	CHEMONTID:0001220	Organic compounds containing an acetonitrile with one hydrogen replaced by a phenyl group.
Benzyl esters	CHEMONTID:0001654	Aromatic compounds containing an esterified benzyl group.
Benzyl fluorides	CHEMONTID:0003982	Organic compounds containing a benzene skeleton substituted with a fluoromethyl group.
Benzyl halides	CHEMONTID:0003981	Organic compounds containing a benzene skeleton substituted with a halomethyl group.
Benzyl isothiocyanates	CHEMONTID:0004548	Aromatic compounds containing an isothiocyanate group that is N-substituted to a benzyl group.
Benzyl sulfoxides	CHEMONTID:0004629	Organosulfur compounds that contain a sulfoxide group substituted by a benzyl group. They have the general structure RS(=O)R' ( R=benzyl, R'=organyl).
Benzyl thiocyanates	CHEMONTID:0004549	Aromatic compounds containing an thiocyanate group that is S-substituted to a benzyl group.
Benzylamines	CHEMONTID:0002673	Organic compounds containing benzylamine, which consists of a benzene group attached to an amine group.
Benzylethers	CHEMONTID:0002542	Aromatic ethers with the general formula ROCR' (R = alkyl, aryl; R'=benzene).
Benzylisoquinolines	CHEMONTID:0000054	Organic compounds containing an isoquinoline to which a benzyl group is attached.
Benzyloxycarbonyls	CHEMONTID:0001097	Organic compounds containing a carbonyl group substituted with a benzyloxyl group.
Benzylpiperidines	CHEMONTID:0003087	Heterocyclic compounds containing a piperidine ring conjugated to a benzyl group.
Beta amino acids and derivatives	CHEMONTID:0001878	Amino acids having a (-NH2) group attached to the beta carbon atom.
Beta carbolines	CHEMONTID:0001914	Compounds containing a 9H-pyrido[3,4-b]indole moiety.
Beta hydroxy acids and derivatives	CHEMONTID:0001713	Compounds containing a carboxylic acid substituted with a hydroxyl group on the C3 carbon atom.
Beta ketoaldehydes	CHEMONTID:0001376	Organic compounds containing an aldehyde substituted with a keto group on the second carbon atom.
Beta lactams	CHEMONTID:0000162	Organic compounds containing a four-member lactam (a cyclic amide).
Beta propiolactones	CHEMONTID:0001243	Organic compounds containing a four-member lactone (a cyclic ester).
Beta sultams	CHEMONTID:0001882	Organic compounds containing a sulfonamide group in which the N-S bond is part of a four member ring.
Beta sultims	CHEMONTID:0002096	Organic compounds containing a sulfonamide group in which the N=S double bond is part of a four member ring. Beta Sultims are tautomeric forms of sultams, where N-S bond is double and not single.
Beta sultones	CHEMONTID:0001887	Organic compounds containing a four-member cyclic ester of hydroxy sulfonic acid, analogous to lactones. Here, the O-S bond is part of the ring.
Beta-amino ketones	CHEMONTID:0000280	Ketones containing a carboxylic acid, and an amine group attached to the beta carbon atom, relative to the C=O group.
Beta-diketones	CHEMONTID:0003926	Organic compounds containing two keto groups separated by a single carbon atom.
Beta-hydroxy aldehydes	CHEMONTID:0002435	Organic compounds containing an aldehyde substituted with a hydroxy group on the second carbon atom.
Beta-hydroxy ketones	CHEMONTID:0002913	Ketones containing a hydroxyl group attached to the beta-carbon atom, relative to the C=O group.
Beta-keto acids and derivatives	CHEMONTID:0001114	Organic compounds containing an aldehyde substituted with a keto group on the C3 carbon atom.
Beta-sulfonopeptides	CHEMONTID:0001901	Peptide analogues containing two 2-sulfonylethan-1-amine groups linked together through a bond between the terminal nitrogen atom of one group and the sulfur atom (of the sulfonyl ) from the other group.
Betacyanins and derivatives	CHEMONTID:0001434	Organic compounds containing a glycoside of indolium-2-carboxylic acid attached, with the nitrogen ring of the indolium ring attached to an ethylpyridine-2,6-dicarboxylic acid derivative. Betacyanins are red nitrogenous pigments found in certain plants, such as beetroots.
Betalains	CHEMONTID:0001435	Organic compounds belonging to the class of Betaxanthins or Betacyanins. This class also contains derivatives of betalamic acid, which is the precursor of betalains.
Betaxanthins and derivatives	CHEMONTID:0000322	Organic compounds containing an aminoethylpyridine-2,6-dicarboxylic acid derivative.
Bi- and oligothiophenes	CHEMONTID:0002021	Organic compounds containing two or more linked thiophene rings. Thiophene is a five-member aromatic ring with one sulfur and four carbon atoms.
Bicyclic amino acids and derivatives	CHEMONTID:0001698	Sugar amino acids in which the amino acid is attached to or partly borne within a bicyclic ring system.
Bicyclic monoterpenoids	CHEMONTID:0001564	Monoterpenoids containing exactly 2 rings, which are fused to each other.
Bicyclogermacrane and isolepidozane sesquiterpenoids	CHEMONTID:0003549	Sesquiterpenoids with a structure based either on the bicyclogermacrane (3,7,11,11-tetramethylbicyclo[8.1.0]undecane, 9CI) skeleton or the isolepidozane skeleton.
Biflavonoids and polyflavonoids	CHEMONTID:0001586	Organic compounds containing at least two flavan/flavone units. These units are usually linked through CC or C-O-C bonds. Some examples include C2-O-C3, C2-O-C4, C3'-C3''', and C6-C8''.
Biflorane and serrulatane diterpenoids	CHEMONTID:0000351	Diterpenoids with a structure based either on the biflorane or the serrulatane skeleton.
Biguanides	CHEMONTID:0000474	Organic compounds containing two N-linked guanidines.
Bile acids, alcohols and derivatives	CHEMONTID:0001445	Organic compounds containing an alcohol or acid derivative of cholic acid.
Bilirubins	CHEMONTID:0001593	Organic compounds containing a dicarboxylic acyclic tetrapyrrole derivative.
Biopterins and derivatives	CHEMONTID:0001651	Coenzymes containing a 2-amino-pteridine-4-one derivative. They are mainly synthesized in several parts of the body, including the pineal gland.
Biotin and derivatives	CHEMONTID:0000244	Organic compounds containing a ureido (tetrahydroimidizalone) ring fused with a tetrahydrothiophene ring.
Biphenols	CHEMONTID:0000325	Organic compounds containing two phenol groups linked together by a C-C bond.
Biphenylbenzimidazoles	CHEMONTID:0000043	Organic compounds containing a biphenyl attached to a benzimidazole. A carbon atom of the biphenyl moiety is boned to a carbon or the nitrogen atom of the benzimidazole moiety.
Biphenylcarbonitriles	CHEMONTID:0001892	Organic compounds containing an acetonitrile with one hydrogen replaced by a biphenyl group.
Biphenyls and derivatives	CHEMONTID:0000041	Organic compounds containing to benzene rings linked together by a C-C bond.
Biphenyltetrazoles and derivatives	CHEMONTID:0000044	Organic compounds containing a biphenyl attached to a tetrazole. A carbon atom of the biphenyl moiety is boned to a carbon or the nitrogen atom of the tetrazole moiety.
Bipyridines and oligopyridines	CHEMONTID:0000326	Organic compounds containing two pyridine rings linked to each other.
Bipyrimidines and oligopyrimidines	CHEMONTID:0001978	Organic compounds containing two or more pyrimidine rings directly linked to each other. Pyrimidine is a 6-membered ring consisting of four carbon atoms and two nitrogen centers at the 1- and 3- ring positions.
Bis-arenediazo oxides	CHEMONTID:0004588	Organonitrogen compounds with the general formula RN=NON=NR', where R and R' are aryl groups.
Bis-arenediazo sulfides	CHEMONTID:0004589	Organonitrogen compounds with the general formula RN=NON=NR', where R and R' are aryl groups.
Bisphenols	CHEMONTID:0000143	Organic compounds containing two hydroxyphenyl group based on a diphenylmethane backbone.
Bisphosphatidic acids	CHEMONTID:0001751	Organic compounds containing two 1,2-diacylglycerol moieties linked to the O1 and O4 oxygen atoms of a phosphate group.
Bisphosphonates	CHEMONTID:0000327	Organic compounds containing two phosphonate groups linked together through a carbon atoms.
Borate esters	CHEMONTID:0004433	Ester derivatives of boric acid, with the generic formula ROB(OR')OR\", where R is an organic group.
Borinanes	CHEMONTID:0002910	Organic heterocyclic compounds containing a saturated aliphatic six-membered ring consisting of five carbon atoms and one boron atom.
Borinic acid derivatives	CHEMONTID:0003219	Compounds comprising any derivative of the boronic acid functional group, with the general structure RB(OR'')R' (R,R'=organyl; R''=H atom or Organyl group).
Borinic acid esters	CHEMONTID:0003220	Compounds comprising the boronic acid ester functional group RB(R')OR'' (R,R',R''=organyl; X= any O,N,Hal residue).
Borinic acids	CHEMONTID:0003221	Compounds comprising any derivative of the boronic acid functional group, with the general structure RB(R')OH (R,R'=organyl).
Boronic acid derivatives	CHEMONTID:0000498	Compounds comprising any derivative of the boronic acid functional group, with the general structure RB(X)Y (R=alkyl, aryl; X,Y= any O, N, Hal residue).
Boronic acid esters	CHEMONTID:0001369	Compounds comprising the boronic acid ester functional group RN(X)OR' (R,R'=alkyl, aryl; X= any O, N, Hal residue).
Boronic acids	CHEMONTID:0000415	Compounds comprising the boronic acid functional group RB(O)O (R,R'=alkyl, aryl).
Branched alkanes	CHEMONTID:0004620	Acyclic branched hydrocarbons having the general formula CnH2n+2.
Branched cycloalkanes	CHEMONTID:0004621	Acyclic unbranched hydrocarbons having the general formula CnH2n+2.
Branched fatty acids	CHEMONTID:0000338	Fatty acids containing a branched chain.
Branched unsaturated hydrocarbons	CHEMONTID:0004622	Hydrocarbons that contains one or more unsaturated carbon atoms, and an aliphatic branch.
Brassinolides and derivatives	CHEMONTID:0001774	Cholestane based steroid lactones containing benzo[c]indeno[5,4-e]oxepin-3-one.
Brevetoxins and derivatives	CHEMONTID:0001304	A group of cyclic polyether compounds produced naturally by a species of dinoflagellate known as Karenia brevis. They contain a Pentaoxapentacycloheptacos- 23-en-7-one derivative (type a brevetoxin) or a pentaoxapentacyclotetracosa- 8,23-dien-7-one derivative (type b brevetoxin).
Briarane diterpenoids	CHEMONTID:0002890	Marine diterpenoids with a structure based on the briarane (3,8-cyclocembrane) skeleton.
Brominated biphenyls	CHEMONTID:0000052	Organic compounds containing a biphenyl moiety substituted at one or more positions by a bromine atom.
Brominated dibenzofurans	CHEMONTID:0004520	Organic compounds containing a bromine atom attached to a dibenzofuran moiety.
Bromoalkenes	CHEMONTID:0003904	Compounds derived from an alkene by replacing a hydrogen atom with a bromine atom.
Bromobenzenes	CHEMONTID:0001098	Organic compounds containing a bromine atom attached to a benzene ring.
Bromodiphenyl ethers	CHEMONTID:0001845	Compounds that contain two benzene groups linked to each other via an ether bond, and where at least one ring is substituted with a bromo group.
Bromohydrins	CHEMONTID:0002607	Alcohols substituted by a bromine atom at a saturated carbon atom otherwise bearing only hydrogen or hydrocarbyl groups.
Bromophenols	CHEMONTID:0002764	Halophenols carrying a bromine on the benzene ring.
Bufanolide glycosides and derivatives	CHEMONTID:0001558	Bufanolides that are glycosidically linked to a glucose moiety.
Bufanolides and derivatives	CHEMONTID:0001557	Steroid lactones containing a pyran-2-one moiety linked to the C17 atom of a cyclopenta[a]phenanthrene derivative.
Butenolides	CHEMONTID:0002223	Dihydrofurans with a carbonyl group at the C2 carbon atom.
Butyrophenones	CHEMONTID:0000350	Compounds containing 1-phenylbutan-1-one moiety.
Buxus alkaloids	CHEMONTID:0002726	Alkaloids with a triterpenoid-steroid pregnane type structure with C-4 methyl groups, a 9beta,10beta-cycloartenol system, and a degraded C-20 side chain. Structurally, they are derivatives of either a 9beta,10beta-cyclo-4,4,14alpha-trimethyl-5alpha-pregnane or a 9(10->19)abeo 4,4,14alpha-trimethyl-5alpha-pregnane system.