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(2007/10/02)Dimethyldisulphide
diphenylmethyl 7α-benzoylamino-3-methylene-1-oxacepham-4α-carboxylate
diphenylmethyl 7α-benzoylamino-3β-phenylseleno-3α-chloromethyl-1-oxacepham-4α-carboxylate
diphenylmethyl 7α-benzoylamino-3α-methoxymethyl-3β-methylthio-1-oxacepham-4α-carboxylate
diphenylmethyl 7α-benzoylamino-3α-acetoxymethyl-3β-methylthio-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