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(2007/10/02)Phenylselenyl chloride
diphenylmethyl 7α-benzoylamino-3-methylene-1-oxacepham-4α-carboxylate
diphenylmethyl 7α-amino-3α-(1-methyl-1H-tetrazol-5-yl)-thiomethyl-3β-methylthio-1-oxacephan-4α-carboxylate
diphenylmethyl 7β-amino-3α-(1-methyl-1H-tetrazol-5-yl)-thiomethyl-3β-methylthio-1-oxacepham-4α-carboxylate
diphenylmethyl 7α-amino-3α-(1-methyl-1H-tetrazol-5-yl)-thiomethyl-3β-methylthio-1-oxacephan-4α-carboxylate hydrochloride
diphenylmethyl 7α-benzoylamino-3β-phenylthio-3α-(1-methyl-1H-tetrazol-5-yl)thiomethyl-1-oxacepham-4α-carboxylate
diphenylmethyl 7β-(D-mandelylamino)-3α-(1-methyl-1H-tetrazol-5-yl)thiomethyl-3β-methylthio-1-oxacephem-4α-carboxylate