cephalosporin cephalexin (6R,7R)-7-{[(2R)-2-amino-2-phenylacetyl]amino}-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid 347.094 347.38900 7-(D-alpha-Aminophenylacetamido)desacetoxycephalosporanic acid 7-beta-(D-alpha-Amino-alpha-phenylacetylamino)-3-methyl-3-cephem-4-carboxylic acid 7beta-[(2R)-2-amino-2-phenylacetamido]-3-methyl-3,4-didehydrocepham-4-carboxylic acid A semisynthetic first-generation cephalosporin antibiotic having methyl and beta-(2R)-2-amino-2-phenylacetamido groups at the 3- and 7- of the cephem skeleton, respectively. It is effective against both Gram-negative and Gram-positive organisms, and is used for treatment of infections of the skin, respiratory tract and urinary tract. Beilstein:965503 C16H17N3O4S CAS:15686-71-2 CEX CHEBI:3534 Cefalexin Celexin Cepastar Cepexin Cephacillin Ceporexin DrugBank:DB00567 Drug_Central:571 HMDB:HMDB0014707 InChI=1S/C16H17N3O4S/c1-8-7-24-15-11(14(21)19(15)12(8)16(22)23)18-13(20)10(17)9-5-3-2-4-6-9/h2-6,10-11,15H,7,17H2,1H3,(H,18,20)(H,22,23)/t10-,11-,15-/m1/s1 KEGG:C06895 KEGG:D00263 LINCS:LSM-5957 PMID:10930630 PMID:12569987 PMID:12833570 PMID:1384868 PMID:2083978 PMID:22559990 PMID:23061564 PMID:23457080 PMID:23545436 PMID:23688276 PMID:23811740 PMID:24268227 PMID:24548092 Patent:US3275626 Patent:US3507861 Reaxys:4238892 Wikipedia:Cefalexin ZAIPMKNFIOOWCQ-UEKVPHQBSA-N [H][C@]12SCC(C)=C(N1C(=O)[C@H]2NC(=O)[C@H](N)c1ccccc1)C(O)=O cefalexina cefalexine cefalexinum chebi_ontology semisynthetic derivative