短語(yǔ)詞組短語(yǔ)Benzoic acid -benzyl ester 5000 ng 苯甲酸芐酯4 -cyano-benzoic acid benzyl ester 氰基苯甲酸芐酯3 -Chlorosulfonyl-benzoic acid benzyl ester 氯磺醯基 返回 benzoic acid benzyl ester