1539-39-5 22164-96-1 4,4'-(Iminodimethylene)dipyridine Gapicomina [INN-Spanish] Gapicomine Gapicomine [INN] Gapicominum [INN-Latin] N-(4-Pyridinylmethyl)-4-pyridinemethanamine, 2-hydroxy-1,2,3-propanetricarboxylate