40283-97-4 Methanethiol, N-(2-phenylthioethyl)amidino-, hydrogen thiosulfate NSC 187543 S-((N-(2-Phenylthioethyl)amidino)methyl) hydrogen thiosulfate Thiosulfuric acid (H2S2O3), S-(2-imino-2-((2-(phenylthio)ethyl)amino)ethyl) ester (9CI)