Fenbenicillin

芬贝西林

Also known as: phenbenicillin, (2S,5R,6R)-3,3-dimethyl-7-oxo-6-[[2-(phenoxy)-2-phenylacetyl]amino]-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid, (2S,5R,6R)-3,3-dimethyl-7-oxo-6-[[2-(phenoxy)-2-phenyl-ethanoyl]amino]-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid, (2S,5R,6R)-7-keto-3,3-dimethyl-6-[[2-(phenoxy)-2-phenyl-acetyl]amino]-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid, (6R)-6-[(α-Phenoxybenzyl)carbonylamino]penicillanic acid, Fenbenicillin USP/EP/BP, (2S,5R,6R)-3,3-Dimethyl-7-oxo-6-(2-phenoxy-2-phenylacetamido)-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid

Fenbenicillin (CAS 1926-48-3) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C22H22N2O5S and a molecular weight of 426.48500 g/mol. It is also known as phenbenicillin, (2S,5R,6R)-3,3-dimethyl-7-oxo-6-[[2-(phenoxy)-2-phenylacetyl]amino]-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid and (2S,5R,6R)-3,3-dimethyl-7-oxo-6-[[2-(phenoxy)-2-phenyl-ethanoyl]amino]-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid. Key properties include a boiling point of 736.3ºC at 760mmHg, a density of 1.41g/cm3 and a flash point of 399.1ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

1926-48-3

Jingsj CID

J-1151524-9

Molecular Formula

C₂₂H₂₂N₂O₅S

Chinese Name

芬贝西林

Molecular Weight

426.48500 g/mol

Category

Organic Compounds

Last updated

8/21/2026