南索拉唑杂质对照品A 2-[[[3-methyl-4- (2,2,2-trifluoro- ethoxy)-2- pyridyl]-methyl] sulphonyl]- benzimidazole 98%
南索拉唑杂质对照品B 2-[{[3-methyl- 4-(2,2,2-trifluoro ethoxy)-2- pyridinyl]- methyl} thio]-1H- benzimid- azole 98%
C 2-[[[3-methyl-4- (2,2,2-trifluoro- ethoxy)-2- pyridinyl] methyl] sulphinyl-1H- benzimidazole- 1-oxide 98%