Synonyms: 1,2,4,5-Benzenetetracarboxylic acid, compd. with 1-methyl-1H-imidazole (1:4);Pyromellitic acid, tetra-3-methylimidazole salt;Benzene-1,2,4,5-tetracarboxylic acid, compound with 1-methyl-1H-imidazole (1:4);benzene-1,2,4,5-tetracarboxylic acid - 1-methyl-1H-imidazole (1:4)