{"Abbreviation":["His"],"Aliases":["2-Amino-3-(4-imidazolyl)propionsaeure","2-azaniumyl-3-(1H-imidazol-5-yl)propanoate","Dtxcid40196658","225-660-9","2-amino-3-(1H-imidazol-4-yl)propanoic acid","H-DL-His-OH","Histidine Base","26062-48-6","Mfcd00005208","184709-11-3","2-Amino-3-(4-imidazolyl)propionic acid","hystidine","histidin","D,L-histidine","Histidine #","Einecs 225-660-9","His-OH","Histidine, free base","His108","Schembl3258","Schembl137600","orb3025619","Schembl1119640","1H-imidazole-4-alanine","BDBM81938","NSC_773","Histidine, \u003e=99%","EBC-47426","NSC620356","Pdsp1_000116","Pdsp2_000116","Akos000269100","Akos015906006","Akos016037364","1H-Imidazole-4-propanoic acid, (S)-","CS-W010925","EBC-249102","FD21675","FH47225","HY-W010209","NSC-620356","Cas_71-00-1","AS-13497","Poly-l-histidine  hydrochloride mw","SY034142","DB-048737","DB-297233","Histidine, puriss., \u003e=99.0%","DS-012903","2-amino-3-(1H-imidazol-4-yl)propanoicacid","H0148","NS00005578","propanoic acid, 2-amino-3-(4-imidazolyl)-","2-amino-3-(3H-imidazol-4-yl)propanoic acid","En300-33906","C00768","H-2300","Ab00514095-02","F222292","Sr-01000596947","Sr-01000596947-1","A5ada56c-5114-4dbc-8f27-b4ad58e79acd","Q27103201","F0452-7577","Z1259162152","HHI"],"CAS":"4998-57-6","Chemical Classes":"Biological Agents -\u003e Amino Acids and Derivatives","ChemicalClasses":["amino acid"],"Chirality":"racemic","ChiralityAminoAcid":true,"DTXSID":"00901785","Druglikeness":{"Lipinski":{"Passes":true,"Violations":0}},"Erowid Experience Reports":[],"Esters":[],"European Community (EC) Number":"225-660-9","Formating":[],"HMDB ID":"HMDB0250763","HeavyAtomCount":11,"IUPACName":"2-amino-3-(1H-imidazol-5-yl)propanoic acid","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)","InChIKey":"HNDVDQJCIGZPNO-UHFFFAOYSA-N","MeSH Headers":[],"MolecularFormula":"C\u003csub\u003e6\u003c/sub\u003eH\u003csub\u003e9\u003c/sub\u003eN\u003csub\u003e3\u003c/sub\u003eO\u003csub\u003e2\u003c/sub\u003e","MolecularWeight":"155.15 g/mol","Opticalactivity":"( + / - )","Passes":true,"Physical Description":"Solid; [Merck Index] White crystalline solid; [Sigma-Aldrich MSDS]","PubChemId":773,"PubChemTitle":"DL-histidine","Records":{"UNII":{"Impurities":[]}},"RefChem":"1083902","RefCount":3,"RefCur":"","References":[{"Name":"Wikipedia","Urls":[{"Link":"https://en.wikipedia.org/wiki/Histidine","Name":"Histidine","Sub":false}]},{"Name":"PubChem","Urls":[{"Link":"https://pubchem.ncbi.nlm.nih.gov/compound/773","Name":"Histidine","Sub":false}]},{"Name":"Common Chemistry","Urls":[{"Link":"https://commonchemistry.cas.org/detail?cas_rn=4998-57-6","Name":"Histidine","Sub":false}]},{"Name":"HMDB","Urls":[{"Link":"https://hmdb.ca/metabolites/HMDB0250763","Name":"Histidine","Sub":false}]},{"Name":"KEGG","Urls":[{"Link":"https://www.kegg.jp/entry/C00768","Name":"Histidine","Sub":false}]},{"Name":"UNII","Urls":[{"Link":"https://gsrs.ncats.nih.gov/ginas/app/ui/substances/QU6SDF3Q03","Name":"Histidine","Sub":false}]},{"Name":"EPA DSSTox","Urls":[{"Link":"https://comptox.epa.gov/dashboard/chemical/details/DTXSID00901785","Name":"Histidine","Sub":false}]}],"Refs":["National Center for Biotechnology Information. PubChem Compound Summary for CID 773, Histidine. Accessed June 13, 2026. \u003ca href=https://pubchem.ncbi.nlm.nih.gov/compound/773\u003ehttps://pubchem.ncbi.nlm.nih.gov/compound/773\u003c/a\u003e","U.S. Food and Drug Administration; National Center for Advancing Translational Sciences. Histidine. UNII: QU6SDF3Q03. Global Substance Registration System. Accessed June 13, 2026. \u003ca href=https://gsrs.ncats.nih.gov/ginas/app/beta/substances/QU6SDF3Q03\u003ehttps://gsrs.ncats.nih.gov/ginas/app/beta/substances/QU6SDF3Q03\u003c/a\u003e"],"SMILES":"C1=C(NC=N1)CC(C(=O)O)N","SaltData":[],"Salts":[],"StereoisomerData":[{"ChemicalClasses":["amino acid"],"ChiralityAminoAcid":true,"SMILES":"N[C@H](CC1=CN=CN1)C(=O)O","Structure":"\u003csvg xmlns=\"http://www.w3.org/2000/svg\" preserveAspectRatio=\"none\" style=\"display:block\" viewBox=\"0 0 85.239 47.39\"\u003e\u003crect width=\"100%\" height=\"100%\" fill=\"#fff\"/\u003e\u003cdesc\u003eGenerated by the Chemistry Development Kit (http://github.com/cdk)\u003c/desc\u003e\u003cg fill=\"#3050f8\" stroke=\"#000\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\".8\"\u003e\u003cpath fill=\"#fff\" stroke=\"none\" d=\"M0 0h86v48H0z\"/\u003e\u003cg class=\"mol\"\u003e\u003cg class=\"bond\"\u003e\u003cpath d=\"M51.988 26.013h-.8M52.274 28.19h-1.372M52.559 30.367h-1.943M52.845 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38.752h.679V40.8h2.459v-2.048h.672v5.001h-.672v-2.381h-2.459v2.381h-.679zM58.923 44.937h1.418v.343h-1.907v-.343q.232-.239.629-.639.4-.404.503-.522.197-.218.272-.368.078-.153.078-.3 0-.239-.168-.389t-.435-.15q-.193 0-.404.068-.211.064-.454.196v-.407q.247-.1.457-.15.215-.05.39-.05.468 0 .743.232.278.232.278.625 0 .182-.071.35-.068.165-.25.39-.05.057-.322.335-.267.279-.757.779\"/\u003e\u003c/g\u003e\u003cpath stroke=\"#3050f8\" d=\"m14.71 21.37 5.24 2.322M8.378 23.148l-3.626 3.991M12.161 43.6l5.702-1.202\" class=\"hi\"/\u003e\u003cpath stroke=\"#ff0d0d\" d=\"m74.376 23.93-4.795-2.768M74.376 23.93l-4.795-2.768\" class=\"hi\"/\u003e\u003cpath stroke=\"#3050f8\" d=\"M51.588 37.152v-5.569M51.588 37.152v-5.569\" class=\"hi\"/\u003e\u003c/g\u003e\u003c/g\u003e\u003c/svg\u003e","Title":"Histidine","UNII":"QU6SDF3Q03","Violations":0,"Wikipedia":"Histidine","XLogP":-3.2}