A ready preparation for a new pyrimidine derivative, 2-aminomethyl-5-chloropyrimidine, from s-methylthiouronium sulphate and mucochloric acid is reported. ... A ready preparation for a new pyrimidine derivative, 2-aminomethyl-5-chloropyrimidine, from s-methylthiouronium sulphate and mucochloric acid is reported. ... In connection with a project in our laboratory, we needed ready access to 2-aminomethyl-5-chloropyrimidine 1 as an useful starting material for the ...