27956-88-3 3-((2-(Phosphonothio)ethyl)amino)propanamide BRN 3948132 Betamide Phosphorothioic acid, S-ester with 3-((2-mercaptoethyl)amino)propionamide (8CI) Propanamide, 3-((2-(phosphonothio)ethyl)amino)- S-(2-((2'-Carbamoylethyl)amino)ethyl) dihydrogen phosphorothioate WR6458