147895-43-0 2-Methyl-2-thiopeudourea sulfate 2260-00-6 2986-19-8 Bis(S-methylthiouronium) sulphate Carbamimidothioic acid, methyl ester, sulfate EINECS 218-860-2 Pseudourea, 2-methyl-2-thio-, sulfate S-Methylisothiuronium sulfate S-Methylthiopseudourea sulfate S-Methylthiouronium sulfate