1068-58-2 14527-26-5 2260-00-6 2986-19-8 4338-95-8 53114-57-1 53212-69-4 72046-62-9 867-44-7 Carbamimidothioic acid, methyl ester S-Methyl isothiourea S-Methyl-isothiourea S-Methylisothiopseudouronium S-Methylisothiourea sulfate S-Methylisothiouronium S-Methylthiopseudouronium iodide