2-Butenoic acid, 4-amino-4-oxo-, (2Z)-, N-tert-C11-14-alkyl derivs. 2-Butenoic acid, 4-amino-4-oxo-, (Z)-, N-tert-C11-14-alkyl derivs. 68512-52-7 EINECS 270-980-4 N-tert(C11-C14)Alkylmaleamic acid