The chemical Imazapyr has a known molecular formula of C13-H15-N3-O3. Synonyms may include: AC 243,997, BRN 5442754, Caswell No. 003F, 2-(4,5-Dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl)-3-pyridinecarboxylic acid, EPA Pesticide Chemical Code 128821, 2-(4-Isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl)nicotinic acid, Chopper, Arsenal 250A, (+-)-Imazapyr, Arsenal (ChemID).