p. 2240 - 2243
(1990)p. 627 - 632
(2007/10/02)p. 3951 - 3953
(2007/10/02)Carbonic acid 2,4-dinitro-phenyl ester 1,2,2,2-tetrachloro-ethyl ester
1,2,2,2-tetrachloroethyl 4-nitrophenyl carbonate
pentachlorophenyl 1,2,2,2-tetrachloroethyl carbonate
(6R,7R)-7-Allyloxycarbonylamino-8-oxo-3-(1,2,2,2-tetrachloro-ethoxycarbonyloxymethyl)-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid benzhydryl ester
8-oxo-7-phenylacetylamino-3-(2,3,3,3-tetrachloro-propionyloxymethyl)-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid benzhydryl ester