1.0 2016-06-03 11:13:25 UTC 2026-05-14 16:24:01 UTC histidine SmallMolecule Histidine is an organic compound with the chemical formula C6H9N3O2 and an average molecular weight of 155.15 g/mol. It is identified as belonging to the amino acids, peptides, and analogues, a subclass of carboxylic acids and derivatives within the organic compounds. The compound is found in or released from 25 recorded sources. Within the category of food, food processing, and cookware, it is associated with fermentation processes for beer, food preservation, the preparation of malt, the preparation of vinegar, food contact materials, and four additional sources. In the realm of electrical and electronic equipment, histidine is linked to electrodes, electric switches, emergency protective devices, electrically stimulated smoking devices, conductors or conductive bodies characterised by the conductive materials, and four other sources. Regarding household cleaning and consumer products, it is found in soap detergents, bleaching agents, perfumes within detergents and soaps, cigar cigarettes, non electric simulated smoking devices, and one more source. Additionally, it is recorded in household items specifically as credit card holders. Exposure to histidine can occur through inhalation, oral intake, and touch. C6H9N3O2 155.1546 155.069476547 (2S)-2-amino-3-(1H-imidazol-5-yl)propanoic acid L-histidine 4998-57-6 NC(CC1=CN=CN1)C(O)=O InChI=1S/C6H9N3O2/c7-5(6(10)11)1-4-2-8-3-9-4/h2-3,5H,1,7H2,(H,8,9)(H,10,11) HNDVDQJCIGZPNO-UHFFFAOYSA-N Organic compounds Organic acids and derivatives Carboxylic acids and derivatives Amino acids, peptides, and analogues Histidine and derivatives Amino acids Aralkylamines Azacyclic compounds Carbonyl compounds Carboxylic acids Heteroaromatic compounds Hydrocarbon derivatives Imidazolyl carboxylic acids and derivatives L-alpha-amino acids Monoalkylamines Monocarboxylic acids and derivatives Organic oxides Organopnictogen compounds Alpha-amino acid Amine Amino acid Aralkylamine Aromatic heteromonocyclic compound Azacycle Azole Carbonyl group Carboxylic acid Heteroaromatic compound Histidine or derivatives Hydrocarbon derivative Imidazole Imidazolyl carboxylic acid derivative L-alpha-amino acid Monocarboxylic acid or derivatives Organic nitrogen compound Organic oxide Organic oxygen compound Organoheterocyclic compound Organonitrogen compound Organooxygen compound Organopnictogen compound Primary aliphatic amine Primary amine Aromatic heteromonocyclic compounds Common amino acids L-alpha-amino acid histidine proteinogenic amino acid Detected and Not Quantified logp -3.6 logp -2.67 ALOGPS logs -0.34 ALOGPS solubility 7.13e+01 g/l ALOGPS logp -3.6 ChemAxon pka_strongest_acidic 1.85 ChemAxon pka_strongest_basic 9.44 ChemAxon iupac (2S)-2-amino-3-(1H-imidazol-5-yl)propanoic acid ChemAxon average_mass 155.1546 ChemAxon mono_mass 155.069476547 ChemAxon smiles NC(CC1=CN=CN1)C(O)=O ChemAxon formula C6H9N3O2 ChemAxon inchi InChI=1S/C6H9N3O2/c7-5(6(10)11)1-4-2-8-3-9-4/h2-3,5H,1,7H2,(H,8,9)(H,10,11) ChemAxon inchikey HNDVDQJCIGZPNO-UHFFFAOYSA-N ChemAxon polar_surface_area 92 ChemAxon refractivity 38.06 ChemAxon polarizability 14.67 ChemAxon rotatable_bond_count 3 ChemAxon acceptor_count 4 ChemAxon donor_count 3 ChemAxon physiological_charge 0 ChemAxon formal_charge 0 ChemAxon #<HealthEffect::ActiveRecord_Associations_CollectionProxy:0x00007f72810caf08> DB00117 773 752