13893-12-4 BRN 2720831 Methanethiol, (1-amino-1-cyclopentyl)-, hydrogen sulfate (ester) S-1-Aminocyclopentanemethylthiosulfuric acid Thiosulfuric acid (H2S2O3), S-((1-aminocyclopentyl)methyl) ester (9CI) Thiosulfuric acid, S-(1-amino-1-cyclopentylmethyl) ester WR 2649