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Select 'All' to list all the chemical categories. Each character links to a view of all chemical categories whose name begin by it. The asterisk (*) links to a view of all categories whose name start with a special character (e.g. '('). You can search the table for a specific string within that specific view.
NameChemOnt IDDescription
Halo-S-triazinesCHEMONTID:0004639Aromatic compounds containing a 1,3,5-triazine ring that is substituted at the 2-position with a halogen atom.
HaloacetanilidesCHEMONTID:0004716Organic compounds containing an acetamide group conjugated to a phenyl group, which is in turn substituted with one or more halogen atoms.
Haloacetylenes and derivativesCHEMONTID:0004565Organohalogen compounds containing an acetylene group substituted with one or more halogen atoms.
HaloalkenesCHEMONTID:0003903Compounds derived from an alkene by replacing a hydrogen atom with a halogen atom.
HalobenzenesCHEMONTID:0000035Aromatic compounds containing a halogen atom linked to a benzene ring.
Halobenzoic acidsCHEMONTID:0003097Benzoic acids carrying a halogen atom on the benzene ring.
Halobenzoic acids and derivativesCHEMONTID:0003096Benzoic acids or derivatives carrying a halogen atom on the benzene ring.
Halogen hydridesCHEMONTID:0000548Inorganic compounds in which the heaviest atom bonded to a hydrogen atom is a halogen.
Halogen nitridesCHEMONTID:0000549Inorganic compounds of nitrogen where nitrogen has a formal oxidation state of -3, and the heaviest atom bonded to it is a halogen.
Halogen organidesCHEMONTID:0000454Inorganic compounds belonging to either the halogen hydrides, halogen nitrides, halogen oxides, or halogen sulfides.
Halogen oxidesCHEMONTID:0000550Inorganic compounds containing an oxygen atom of an oxidation state of -2, in which the heaviest atom bonded to the oxygen is a halogen.
Halogen sulfidesCHEMONTID:0000551Inorganic compounds containing a sulfur atom of an oxidation state of -2, in which the heaviest atom bonded to the oxygen is a halogen.
Halogenated fatty acidsCHEMONTID:0000483Fatty acids with a chain that carries a halogen atom (Cl,F,I,Br).
Halogenated steroidsCHEMONTID:0002645Compounds containing an steroid backbone, with at least one hydrogen substituted by a halogen atom.
HalohydrinsCHEMONTID:0002528Alcohols substituted by a halogen atom at a saturated carbon atom otherwise bearing only hydrogen or hydrocarbyl groups (usually used to mean beta-halo alcohols).
HalomethanesCHEMONTID:0004157Organic compounds in which at least one of the four hydrogen atoms of methane (CH4) are replaced by halogen atoms.
HalonitrobenzenesCHEMONTID:0004541Compounds containing a nitrobenzene moiety, where the benzene ring carries an halogen atom.
HalophenolsCHEMONTID:0002320Aromatic compounds containing benzene substituted by a hydroxyl group and a halogen atom.
HalopyridinesCHEMONTID:0003970Organic compounds containing a pyridine ring substituted at one or more positions by a halogen atom.
HalopyrimidinesCHEMONTID:0001893Aromatic compounds containing a halogen atom linked to a pyrimidine ring. Pyrimidine is a 6-membered ring consisting of four carbon atoms and two nitrogen centers at the 1- and 3- ring positions.
HaloquinolinesCHEMONTID:0004403Compounds containing a quinoline moiety, which is substituted at one or more ring positions by n halogen atom.
HalotoluenesCHEMONTID:0004528Aromatic compounds containing a toluene that is substituted at one or more ring positions with a halogen atom.
Harmala alkaloidsCHEMONTID:0001140Compounds with a structure based on harmaline, harmine, harmalol, harman or a derivative of those parents. These parents are beta-carbolines, consisting of a pyrimidine fused to the pyrrole moiety of an indole to form a pyrido[3,4-b]indole.
Hasubanan alkaloidsCHEMONTID:0002792Alkaloids with a structure based on the hasubanan skeleton, a tetracyclic propellane.
HemiacetalsCHEMONTID:0001092Compounds comprising the hemiacetal functional group, with the general formula R2C(OH)OR' ( R' not Hydrogen ).
HemiaminalsCHEMONTID:0001088Compounds comprising the hemiaminal functional group, with the general formula R2C(OH)NR2 where R can by a hydrogen or an alkyl group.
HemiketalsCHEMONTID:0002539Hemiacetals having the structure R2C(OH)OR' ( R' not H ), derived from ketones by formal addition of an alcohol to the carbonyl group.
HepoxilinsCHEMONTID:0001020Eicosanoids containing an oxirane group attached to the fatty acyl chain.
HeptosesCHEMONTID:0001499Monosaccharides in which the sugar unit is a seven-carbon containing moeity.
Heteroaromatic compoundsCHEMONTID:0004144Compounds containing an aromatic ring where a carbon atom is linked to an hetero atom.
Heterocyclic diaryl ethersCHEMONTID:0001215Heterocyclic compounds comprising the diaryl ether functional group, with the general formula ROR' (R,R'=aryl).
Heterocyclic fatty acidsCHEMONTID:0001989Fatty acids containing a heterocyclic attached to the acyl chain.
Hetidine-type diterpenoid alkaloidsCHEMONTID:0003779Alkaloid diterpenoids with a structure based on the hetidine skeleton, which is a hexacyclic compound with an additional C-20-C-14 bond in the atisine-type.
Hetisine-type diterpenoid alkaloidsCHEMONTID:0003780Alkaloid diterpenoids with a structure based on the hetisine skeleton, which is a heptacyclic compound with an additional N-C-6 bond as compared with the hetidine-type, and thus, is one of most complex entries in the atisane-class.
Hexacarboxylic acids and derivativesCHEMONTID:0002967Carboxylic acids containing exactly six carboxyl groups.
Hexahydrobenzophenanthridine alkaloidsCHEMONTID:0002666Alkaloids containing a hexahydrobenzophenanthridine skeleton, which is a tetracyclic compound containing a benzene fused to a hexahydrophenanthridine moiety.
Hexamethonium compoundsCHEMONTID:0001282Organic compounds containing a N,N,N,N',N',N'-hexamethylhexane-1,6-diaminium moiety.
Hexose phosphatesCHEMONTID:0002260Carbohydrate derivatives containing a hexose substituted by one or more phosphate groups.
HexosesCHEMONTID:0001498Monosaccharides in which the sugar unit is a is a six-carbon containing moeity.
Himachalane and lippifoliane sesquiterpenoidsCHEMONTID:0003545Diterpenoids with a structure based on either the himachalane or the lippifoliane skeleton.
Hippuric acidsCHEMONTID:0001318Compounds containing hippuric acid, which consists of a of a benzoyl group linked to the N-terminal of a glycine.
Hippuric acids and derivativesCHEMONTID:0000179Compounds containing a hippuric acid or a derivative, with a structure characterized the presence of a benzoyl group linked to the N-terminal of a glycine.
Histidine and derivativesCHEMONTID:0004311Compounds containing cysteine or a derivative thereof resulting from reaction of cysteine at the amino group or the carboxy group, or from the replacement of any hydrogen of glycine by a heteroatom.
HistrionicotoxinsCHEMONTID:0002064Frog toxins structurally characterized by the presence of a dodecahydropyrrolo[1,2-a]quinolin-1-yl}ethanol moiety or a 2,7-disubstituted 1-azaspiro[5.5]undecan-8-ol moiety.
HolostanesCHEMONTID:0002904Steroids with a structure characterized by a lanostane moiety possessing a 18,20-lactone ring.
HomoaporphinesCHEMONTID:0002661Alkaloids derived from phenethylisoquinoline precursors by direct intramolecular oxidative coupling. They incorporate a nucleus A and are always pentaoxygenated at C- 1, -2, - 10, - 11, and - 12. The nitrogen function in ring B is usually N-methylated, but it may also be secondary.
Homocyclic diaryl ethersCHEMONTID:0001216Homocyclic compounds comprising the diaryl ether functional group, with the general formula ROR' (R,R'=aryl).
Homoerythrinane alkaloidsCHEMONTID:0002781Erythrina alkaloids predominantly possessing a 6-5-7-6-membered indolobenzazepine skeleton or a derivative thereof.
Homogeneous actinide compoundsCHEMONTID:0000430Inorganic compounds containing only metal atoms,with the largest atom being a transition metal atom.
Homogeneous alkali metal compoundsCHEMONTID:0000425Inorganic compounds containing only metal atoms,with the largest atom being a alkali metal atom.
Homogeneous alkaline earth metal compoundsCHEMONTID:0000428Inorganic compounds containing only metal atoms,with the largest atom being a alkaline earth metal atom.
Homogeneous halogensCHEMONTID:0000432Inorganic non-metallic compounds in which the largest atom is a nobel gas.
Homogeneous lanthanide compoundsCHEMONTID:0000429Inorganic compounds containing only metal atoms, with the largest atom being a lanthanide atom.
Homogeneous metal compoundsCHEMONTID:0000422Inorganic compounds that contain only metal atoms.
Homogeneous metalloid compoundsCHEMONTID:0000431Inorganic compounds containing only metal atoms,with the largest atom being a metalloid atom.
Homogeneous noble gasesCHEMONTID:0000433Inorganic non-metallic compounds in which the largest atom is a halogen atom.
Homogeneous non-metal compoundsCHEMONTID:0000423Inorganic compounds that contain only metal elements.
Homogeneous other non-metal compoundsCHEMONTID:0000434Inorganic non-metallic compounds in which the largest atom belongs to the class of 'other nonmetals'.
Homogeneous post-transition metal compoundsCHEMONTID:0000427Inorganic compounds containing only metal atoms,with the largest atom being a post-transition metal atom.
Homogeneous transition metal compoundsCHEMONTID:0000426Inorganic compounds containing only metal atoms,with the largest atom being a transition metal atom.
HomoisoflavanonesCHEMONTID:0002898Homoisoflavonoids with a structure based on the chromanone system. Chromanone is a bicyclic compound consisting of a 3,4-dihydro-1-benzopyran, which bears a ketone group at the 4-position.
HomoisoflavansCHEMONTID:0002508Homoisoflavonoids with a structure based on the chromane system. Chromone is a bicyclic compound consisting of a 3,4-dihydro-1-benzopyran.
HomoisoflavonesCHEMONTID:0001633Homoisoflavonoids with a structure based on the chromone system. Chromone is a bicyclic compound consisting of a 1-benzopyran, which bears a ketone group at the 4-position.
HomoisoflavonoidsCHEMONTID:0002507Naturally occurring oxygen heterocycles with a structure based on a 16-carbon skeleton including a chromanone, chromone or chromane system with a benzyl group at position C-3.
Homolycorine-type amaryllidaceae alkaloidsCHEMONTID:0004122Amaryllidaceae alkaloids compounds containing the homolycorine skeleton, made up of a [3,4-g]benzopyranone ring due to the oxidation of the hydroxyl group at the C6. They are biogenetically formed through a restructuring of lycorine-type alkaloids.
HomoproaporphinesCHEMONTID:0002662Analogues of proaporphines with the difference that the spirocyclohexenol ring is joined to a cyclohexane instead of a cyclopentane.
Hopane triterpenoidsCHEMONTID:0001824Triterpenoids with a structure based on the hopane skeleton.
HopanoidsCHEMONTID:0001823Terpenoids containing hopane skeleton(A'-Neogammacerane), a pentacyclic structure with four cyclohexane rings and one cyclopentane ring (and often, a side chain emerging from C30).
Hybrid glycopeptidesCHEMONTID:0002009Compounds containing a carbohydrate component linked to a hybrid peptide component.
Hybrid peptidesCHEMONTID:0002010Compounds containing at least two different types of amino acids (alpha, beta, gamma, delta) linked to each other through a peptide bond.
HydantoinsCHEMONTID:0002273Heterocyclic compounds containing an imidazolidine substituted by ketone group at positions 2 and 4.
HydrazidinesCHEMONTID:0002464Hydrazine derivatives with the general formula RC(NHNH2)2=NNH2.
HydrazinecarboxamidesCHEMONTID:0003134Organonitrogen compounds with the general formula RN(H)N(H)C(=O)N (R = organyl).
Hydrazinecarboxylic acid estersCHEMONTID:0004715Ester derivatives of hydrazinecarboxylic acids.
Hydrazinecarboxylic acidsCHEMONTID:0003133Organonitrogen compounds with the general formula RN(H)N(H)C(=O)OH (R = organyl).
Hydrazinecarboxylic acids and derivativesCHEMONTID:0003132Organonitrogen compounds with the general formula RN(H)N(H)C(=O)OR' (R = organyl, R = any).
Hydrazines and derivativesCHEMONTID:0000112Compounds comprising the hydrazine functional group, with the general formula R1R2NNR3R4.
HydrazineselenoamidesCHEMONTID:0003149Organoselenium compounds with the general formula N(R)NC(=Se)N(R')R'' (R = organyl; R',R'' = H or organyl).
Hydrazinesulfinic acidsCHEMONTID:0003111Sulfinic acids with the general formula R-N-NS(=O)=O.
HydrazinopeptidesCHEMONTID:0001958Compounds in which one of the native CONH links is replaced by a CONHNH (hydrazido) fragment.
Hydrazinosulfonyl compoundsCHEMONTID:0003138Hydrazine derivatives with the general formula RS(=O)(=O)N(H)N (R = organyl).
HydrazonesCHEMONTID:0000116Compounds containing an N-Alkylidene derivative of hydrazine. They have the generic structure RNN=C(R')R\" (R,R',R\"= H or organyl group).
HydrobromidesCHEMONTID:0003920Organic salts that results from the reaction of hydrobromic acid with an organic base.
Hydrocarbon derivativesCHEMONTID:0004150Derivatives of hydrocarbons obtained by substituting one or more carbon atoms by an heteroatom. They contain at least one carbon atom and heteroatom.
HydrocarbonsCHEMONTID:0002837Organic compounds made up only of carbon and hydrogen atoms.
HydrochloridesCHEMONTID:0003921Organic salts that results from the reaction of hydrochloric acid with an organic base.
HydrofluorocarbonsCHEMONTID:0004522Alkyhalide compounds that are composed only of hydrogen, fluorine, and carbon atoms.
Hydrolyzable tanninsCHEMONTID:0001710Tannins with a structure characterized by either of the following models. In model 1, the structure contains galloyl units (in some cases, shikimic acid units) are linked to diverse polyol carbohydrate-, catechin-, or triterpenoid units. In model 2, contains at least two galloyl units C-C coupled to each other, and do not contain a glycosidically linked catechin unit.
Hydroperoxy fatty acidsCHEMONTID:0000340Fatty acids containing a hydroperoxide group attached to the chain.
Hydroperoxyeicosapentaenoic acidsCHEMONTID:0001011Eicosanoic acids with an attached hydroperoxyl group and five CC double bonds.
Hydroperoxyeicosatetraenoic acidsCHEMONTID:0000387Eicosanoic acids with an attached hydroperoxyl group and four CC double bonds.
Hydroperoxyeicosatrienoic acidsCHEMONTID:0000383Eicosanoic acids with an attached hydroperoxyl group and three CC double bonds.
HydrophenanthrenesCHEMONTID:0000223A phenanthrene derivative where at least one ring CC bond is substituted by hydrogenation.
HydropyridinesCHEMONTID:0002224Compounds containing a hydrogenated pyridine ring (i.e. containing less than the maximum number of double bonds.).
Hydropyrimidine carboxylic acids and derivativesCHEMONTID:0002222Compounds containing a hydrogenated pyrimidine ring which bears a carboxylic acid group.
HydropyrimidinesCHEMONTID:0002202Compounds containing a hydrogenated pyrimidine ring (i.e. containing less than the maximum number of double bonds.).
HydroquinolinesCHEMONTID:0001715Derivatives of quinoline in which in which at least one double bond in the quinoline moiety are reduced by adding two hydrogen atoms.
HydroquinolonesCHEMONTID:0001716Compounds containing a hydrogenated quinoline bearing a ketone group.
HydroquinonesCHEMONTID:0000136Compounds containing a hydroquinone moiety, which consists of a benzene ring with a hydroxyl groups at positions 1 and 4.
Hydroxamic acid estersCHEMONTID:0003880Hydroxamic acids in which the hydrogen of the hydroxy group has been replaced by an organyl group.
Hydroxamic acidsCHEMONTID:0000376Compounds containing a hydroxamic acid functional group in which a hydroxylamine is inserted into a carboxylic acid. Its general structure is R-CO-NH-OH, with an R as an organic residue.
Hydroxy acids and derivativesCHEMONTID:0000472Compounds comprising one or more hydroxy acid groups.
Hydroxy bile acids, alcohols and derivativesCHEMONTID:0002194Bile acids, alcohols or derivatives bearing at least hydroxyl group.
Hydroxy fatty acidsCHEMONTID:0000341Fatty acids in which the chain bears a hydroxyl group.
Hydroxy-7-aporphinesCHEMONTID:0003021Aporphines containing a hydroxyl group at the 7-position.
HydroxyanilidesCHEMONTID:0004200Compounds that contain an anilide moiety, where the benzene ring carries a hydroxyl group.
HydroxyanthraquinonesCHEMONTID:0001598Compounds containing a hydroxyanthraquinone moiety, which consists of an anthracene bearing a quinone, and hydroxyl group.
HydroxybenzaldehydesCHEMONTID:0003978Organic aromatic compounds containing a benzene ring carrying an aldehyde group and a hydroxyl group.
Hydroxybenzoic acid derivativesCHEMONTID:0001248Compounds containing a hydroxybenzoic acid (or a derivative), which is a benzene ring bearing a carboxyl and a hydroxyl groups.
HydroxybenzonitrilesCHEMONTID:0004680Aromatic containing a benzonitrile group moiety that carries an hydroxyl group on the benzene ring.
Hydroxycinnamic acid estersCHEMONTID:0003002Ester derivatives of hydroxycinnamic acids.
Hydroxycinnamic acid glycosidesCHEMONTID:0003003Glycosylated hydoxycinnamic acids derivatives.
Hydroxycinnamic acidsCHEMONTID:0002503Compounds containing an cinnamic acid where the benzene ring is hydroxylated.
Hydroxycinnamic acids and derivativesCHEMONTID:0001391Compounds containing an cinnamic acid (or a derivative thereof) where the benzene ring is hydroxylated.
HydroxycoumarinsCHEMONTID:0002908Coumarins that contain one or more hydroxyl groups attached to the coumarin skeleton.
Hydroxyeicosapentaenoic acidsCHEMONTID:0000214Eicosanoic acids with an attached hydroxyl group and five CC double bonds.
Hydroxyeicosatetraenoic acidsCHEMONTID:0000046Eicosanoic acids with an attached hydroxyl group and four CC double bonds.
Hydroxyeicosatrienoic acidsCHEMONTID:0000030Eicosanoic acids with an attached hydroxyl group and three CC double bonds.
HydroxyflavonoidsCHEMONTID:0002991Flavonoids in which one or more hydroxyl groups are attached to the flavonoid skeleton.
HydroxyindolesCHEMONTID:0004162Organic compounds containing an indole moiety that carries a hydroxyl group.
HydroxyisoflavonoidsCHEMONTID:0004154Organic compounds containing an isoflavonoid skeleton carrying one or more hydroxyl groups.
Hydroxylamine O-sulfonic acidsCHEMONTID:0003110Sulfonic acids with the general formula R-N-OS(O)(=O)=O. They can be synthesized through reaction of hydroxylamine and chlorosulfonic acids.
Hydroxymercuribenzoic acidsCHEMONTID:0004028Benzoic acids containing a hydroxymercury (-HgOH) group attached to the benzene moiety.
HydroxypyridinesCHEMONTID:0004151Organic compounds containing a pyridine ring substituted at one or more positions by a hydroxyl group.
HydroxypyrimidinesCHEMONTID:0004161Organic compounds containing a hydroxyl group attached to a pyrimidine ring. Pyrimidine is a 6-membered ring consisting of four carbon atoms and two nitrogen centers at the 1- and 3- ring positions.
HydroxyquinolinesCHEMONTID:0000057Compounds containing a quinoline moiety bearing a hydroxyl group.
HydroxyquinolonesCHEMONTID:0001714Compounds containing a quinoline moiety bearing a hydroxyl group and a ketone. Quinoline or benzo[b]pyridine is a bicyclic compound that consists of benzene fused to a pyridine.
Hydroxyquinols and derivativesCHEMONTID:0000380Compounds containing a 1,2,4-trihydroxybenzene moiety.
HydroxysteroidsCHEMONTID:0001295Compounds containing an steroid backbone, with at least one hydrogen substituted by a hydroxyl group.
HypoxanthinesCHEMONTID:0000246Compounds containing the purine derivative 1H-purin-6(9H)-one. Purine is a bicyclic aromatic compound made up of a pyrimidine ring fused to an imidazole ring.