20709-37-9 Ethanethiol, 2-((4-aminobutyl)amino)-, dihydrogen phosphate (ester) Phosphorothioic acid, S-(2-((4-aminobutyl)amino)ethyl) ester Phosphorothioic acid, S-ester with 2-((4-aminobutyl)amino)ethanethiol S-2-((4-Aminobutyl)amino)ethyl dihydrogen phosphorothioate WR 2822