(Aminomethyl)(4-piperidinophenyl)acetic acid 71825-29-1 BRN 1646937 Benzeneacetic acid, alpha-(aminomethyl)-4-(1-piperidinyl)- L-Phenylalanine, 4-(1-piperidinyl)-, beta- beta- 4-(1-Piperidinyl)-L-phenylalanine