2-(Butenylmercapto)-N-methylisobutyramide 2-(Butenylthio)-N,2-dimethylpropionamide 4-04-00-00255 (Beilstein Handbook Reference) 63915-94-6 BRN 1705690 N-Methyl-alpha-crotylmercaptoisobutyramide Propionamide, 2-(2-butenyl)thio-N,2-dimethyl-