CAS 128249-59-2 appears in our catalog under these names: 1-Ethyl-3-methyl-1h-pyrazole-5-carbonyl chloride, 95%, 1-Ethyl-3-methyl-1H-pyrazole-5-carbonyl chloride 97%, 1-Ethyl-3-methylpyrazole-5-carbonyl chloride. Offered by: Combi-blocks, Ambeed, Fluorochem. Available pack sizes: 250mg, 1g, 100mg.