bis(S-methylthiouronium) sulphate carbamimidothioic acid, methyl ester, sulfate s-methylisothiuronium sulfate Carbamimidothioic acid methyl/sulfuric acid,(1:x) 2-Methyl-2-thiopeudourea sulfate Carbamimidothioic acid, methyl ester, sulfate (1:) Einecs 218-860-2 Pseudourea, 2-methyl-2-thio-, sulfate