4-Pentenoic acid,2-amino- , its cas register number is 7685-44-1. It also can be called AI3-52415 ; DL-Allylglycine ; DL-2-Aminopent-4-enoic acid . 4-Pentenoic acid,2-amino- (CAS NO.7685-44-1) is a white crystalline powder.