(CAS NO.: ), with other name of 3(2H)-Pyridazinone, 4,5-dihydro-6-(2-(4-methoxyphenyl)-1H-benzimidazol-5-yl)-5-methyl-, could be produced through many synthetic methods.

Following is one of the reaction routes:

The cyclization of methyl 3-[4-(4-methoxybenzoylamino)-3-nitrobenzoyl]butyrate (I) with hydrazine hydrate in refluxing acetic acid gives 4,5-dihydro-6-[4-(4-methoxybenzoylamino)-3-nitrobenzoyl]-5-methylpyridazin-3(2H)-one (II), which is reduced with H₂ over Pd/C in ethanol yielding the corresponding amino derivative (III). Finally, this compound is cyclized in refluxing acetic acid.