CAS 100047-66-3 appears in our catalog under these names: 1-Methyl-6-oxo-1,6-dihydropyridazine-3-carboxylic acid, 97%, 1–Methyl–6–oxo–1,6–dihydropyridazine–3–carboxylic acid, 1-Methyl-6-oxo-1,6-dihydropyridazine-3-carboxylic acid, 98%, 98%, 1-Methyl-6-oxo-1,6-dihydro-pyridazine-3-carboxylic acid, 98%, 1-Methyl-6-Oxo-1,6-Dihydropyridazine-3-Carboxylic Acid, 98%. Offered by: Combi-blocks, GLPBio, Chemat, Fluorochem, Ambeed. Available pack sizes: 1g, 5g, 250mg, 100g, 50g, 100mg, 10g, 25g.