... -ethyl-5-fluoropyrimidine cas NO.:137234-74-33)(2R,3S/2S,3R)-3-(4-Chloro-5-fluoro-6-pyrimidinyl)-2-(2 ... hydrochloride cas NO.:188416-35-5We also supply Voriconazole (2S,3R) isomer, Voriconazole(2S,3S/2R,3R) racemic mixture and other impurities ...