头孢氨苄

(6R)-3-methyl-8-oxo-7t-(trimethylsilanyl-amino)-(6rH)-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid trimethylsilanyl ester

N-tert-butyloxycarbonylcefradine

3-甲基噻吩