5-Pyrimidinecarboxylic acid, 4-methyl-2-(methylthio)-, ethyl ester 7234-25-5 Emtmpc Ethyl 2-methylthio-4-5-pyrimidinecarboxylate Ethyl-2-methylthio-4-methyl-5-pyrimidine carboxylate S-7 S-7HNa