6-Methyl-4(3H)-pyrimidinone3524-87-630 % similar 2-(Methylthio)thiazole5053-24-730 % similar 5-Bromo-2-(methylthio)pyrimidine-4-carboxylic acid50593-92-530 % similar 5-Chloro-2-(methylsulfanyl)pyrimidine-4-carboxylic acid61727-33-130 % similar Methyl(methylthio)pyrazine67952-65-230 % similar