1.0 2026-03-31 20:44:50 UTC 2026-04-15 17:26:50 UTC Fumoxicillin SmallMolecule Fumoxicillin is an organic compound with the formula C21H21N3O6S1 and an average molecular weight of 443.47 g/mol. Fumoxicillin belongs to the beta lactams, a subclass of lactams within the organic compounds. It is further classified as an organoheterocyclic compound. This substance is found in or released from healthcare, pharmaceuticals & veterinary products, specifically antibiotics. Recorded exposure routes for fumoxicillin include oral and inhalation. (2S,5R,6R)-6-((R)-2-((Furan-2-ylmethylene)amino)-2-(4-hydroxyphenyl)acetamido)-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid (2S,5R,6R)-6-((R)-2-(Furfurylideneamino)-2-(p-hydroxyphenyl)acetamido)-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo(3.2.0)heptane-2-carboxylic acid (2S,5R,6R)-6-((R)-2-(Furfurylideneamino)-2-(p-hydroxyphenyl)acetamido)-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic Acid (2S,5R,6R)-6-[[(2R)-2-(2-furylmethyleneamino)-2-(4-hydroxyphenyl)-1-oxoethyl]amino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid (2S,5R,6R)-6-[[(2R)-2-(2-furylmethyleneamino)-2-(4-hydroxyphenyl)acetyl]amino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid (2S,5R,6R)-6-[[(2R)-2-(2-furylmethyleneamino)-2-(4-hydroxyphenyl)acetyl]amino]-7-keto-3,3-dimethyl-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid (2S,5R,6R)-6-[[(2R)-2-(furan-2-ylmethylideneamino)-2-(4-hydroxyphenyl)acetyl]amino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid (2S,5R,6R)-6-[[(2R)-2-(furan-2-ylmethylideneamino)-2-(4-hydroxyphenyl)ethanoyl]amino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid (2S,5R,6R)-6-{[(2R)-2-[(E)-(2-Furylmethylene)amino]-2-(4-hydroxyphenyl)acetyl]amino}-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid 278-865-0 4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid, 6-[[(2R)-2-[[(1E)-2-furanylmethylene]amino]-2-(4-hydroxyphenyl)acetyl]amino]-3,3-dimethyl-7-oxo-, (2S,5R,6R)- D04270 fumoxicillin Fumoxicillin (USAN) Furoxicillin UNII-C7H9M9492J C21H21N3O6S1 443.47 443.115106 78186-33-1 [H][C@]12SC(C)(C)[C@@H](N1C(=O)[C@H]2NC(=O)[C@H](N=CC1=CC=CO1)C1=CC=C(O)C=C1)C(O)=O InChI=1S/C21H21N3O6S/c1-21(2)16(20(28)29)24-18(27)15(19(24)31-21)23-17(26)14(11-5-7-12(25)8-6-11)22-10-13-4-3-9-30-13/h3-10,14-16,19,25H,1-2H3,(H,23,26)(H,28,29)/t14-,15-,16+,19-/m1/s1 BWENFVHXWNVVGN-OAFZBRQQSA-N Detected and Not Quantified average_mass 443.47 ChemAxon mono_mass 443.115106 ChemAxon smiles [H][C@]12SC(C)(C)[C@@H](N1C(=O)[C@H]2NC(=O)[C@H](N=CC1=CC=CO1)C1=CC=C(O)C=C1)C(O)=O ChemAxon formula C21H21N3O6S1 ChemAxon inchi InChI=1S/C21H21N3O6S/c1-21(2)16(20(28)29)24-18(27)15(19(24)31-21)23-17(26)14(11-5-7-12(25)8-6-11)22-10-13-4-3-9-30-13/h3-10,14-16,19,25H,1-2H3,(H,23,26)(H,28,29)/t14-,15-,16+,19-/m1/s1 ChemAxon inchikey BWENFVHXWNVVGN-OAFZBRQQSA-N ChemAxon #<HealthEffect::ActiveRecord_Associations_CollectionProxy:0x00007f3bf37553d8> DB20545 20055356 16736676