p. 2117 - 2124
(2007/10/02)(6R,7R,2'S)-3-acetoxymethyl-7-hydroxy(phenyl)acetylaminoceph-3-em-4-carboxylic acid
(S)-formyloxy(phenyl)acetyl chloride
(S)-formyloxy(phenyl)acetic acid
4-nitrobenzyl (2'S,6R,7R)-3-acetoxymethyl-7-hydroxy(phenyl)acetylaminoceph-3-em-4-carboxylate
(R)-formiloxy(phenyl)acetic acid