1-Methylimidazole-4,5-bis-(carboxylic acid monomethylamide) 5-25-05-00348 (Beilstein Handbook Reference) 880-90-0 Antifein Antiphein BRN 0522486 IEM 168 Imidazole-4,5-dicarboxamide, N,N',1-trimethyl- N,N',1-Trimethylimidazole-4,5-dicarboxamide