19143-28-3 DL-4-Phthalimidoglutaramic acid methyl ester Glutaramic acid, 4-phthalimido-, methyl ester, DL- Methyl 4-phthalimido-DL-glutaramate Methyl-4-phthalimido-glutaramate, DL- N-alpha-Phthaloyl-DL-isoglutamine methyl ester WU-385 WY-385