p. 4791 - 4793
(2013/06/27)p. 9057 - 9060
(2012/10/29)(2012/12/13)
(6R,7R)-3-Chloromethyl-8-oxo-7-phenylacetylamino-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid 4-methoxy-benzyl ester
sodium N,N-(diethylamino)diazen-1-ium-1,2-diolate
(6R,7R)-4-methoxybenzyl-3-(iodomethyl)-8-oxo-7-(2-phenylacetamido)-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate