7-氨基-3-甲基-8-氧代-5-硫杂-1-氮杂双环[4.2.0]辛-2-烯-2-甲酸

(R)-氨基苯乙酸甲酯

(D)-phenylglycine methyl ester methanesulphonate

7-Aminodesacetoxycephalosporanic acid

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