头孢氨苄

10-acetoxy-1β-oxo-6β-(2-phenyl-acetylamino)-1λ4-penicillanic acid 2,2,2-trichloro-ethyl ester

10-chloro-6β-(2-phenyl-acetylamino)-penicillanic acid 2,2,2-trichloro-ethyl ester

(6R)-3t-chloro-3c-methyl-8-oxo-7t-(2-phenyl-acetylamino)-(6rH)-5-thia-1-aza-bicyclo[4.2.0]octane-2c-carboxylic acid 2,2,2-trichloro-ethyl ester

2,2,2-trichloroethyl 7α-ethylthioceph-3-em