CAS 494747-21-6 appears in our catalog under these names: Ethyl 2-(3,5-dimethyl-4-nitro-1h-pyrazol-1-yl)propanoate, 95%, Ethyl 2-(3,5-dimethyl-4-nitro-1H-pyrazol-1-yl)propanoate, 97%. Offered by: Combi-blocks, AmBeed. Available pack sizes: 250mg, 1g, 5g.