(2S)-1-Cyano-2-hydroxy-3,4-epithiobutane 18654-80-3 4,5-Epithio-3-hydroxyvaleronitrile, stereoisomer 5-18-07-00243 (Beilstein Handbook Reference) BRN 3931489 Valeronitrile, 4,5-epithio-3-hydroxy-, (3R,4S)- Valeronitrile, 4,5-epithio-3-hydroxy-, stereoisomer