1-Pyrrolidineacrylic acid, .gamma.-methyl-, methyl ester 15424-17-6 2-Butenoic acid, 3-(1-pyrrolidinyl)-, methyl ester Crotonic acid, 3-(1-pyrrolidinyl)-, methyl ester Methyl-3-(N-pyrrolidinyl)crotonate NSC91035 WLN: T5NTJ AY1&U1VO1