287488-94-2
(2R,6R)-3-Formyl-8-oxo-7-[1-pyridin-2-yl-meth-(Z)-ylidene]-5-thia-1-aza-bicyclo[4.2.0]oct-3-ene-2-carboxylic acid benzhydryl ester
287489-36-5
(2R,6R)-3-((E)-Buta-1,3-dienyl)-8-oxo-7-[1-pyridin-2-yl-meth-(Z)-ylidene]-5-thia-1-aza-bicyclo[4.2.0]oct-3-ene-2-carboxylic acid benzhydryl ester
287489-31-0
(2R,6R)-3-((E)-2-Cyano-vinyl)-8-oxo-7-[1-pyridin-2-yl-meth-(Z)-ylidene]-5-thia-1-aza-bicyclo[4.2.0]oct-3-ene-2-carboxylic acid benzhydryl ester
287488-98-6
(2R,6R)-3-((E)-2-Nitro-vinyl)-8-oxo-7-[1-pyridin-2-yl-meth-(Z)-ylidene]-5-thia-1-aza-bicyclo[4.2.0]oct-3-ene-2-carboxylic acid benzhydryl ester
287489-33-2
(2R,6R)-3-((E)-2-Methoxycarbonyl-vinyl)-8-oxo-7-[1-pyridin-2-yl-meth-(Z)-ylidene]-5-thia-1-aza-bicyclo[4.2.0]oct-3-ene-2-carboxylic acid benzhydryl ester