rac-Clopidogrel EP Impurity F HCl Catalogue L620419 CAS 141109-18-4 M.W 309.82 36.46 M.F C15H16ClNO2S. HCl Specifications FAQs methyl 2-(2-chlorophenyl)-2-((2-(thiophen-2-yl)ethyl)amino)acetate, hydrochloride (1:1)