CAS 923283-30-1 appears in our catalog under these names: Methyl 1-ethyl-4-nitro-1h-pyrazole-3-carboxylate, 95%, methyl 1-ethyl-4-nitro-1H-pyrazole-3-carboxylate, 98%. Offered by: Combi-blocks, Chemat, Fluorochem. Available pack sizes: 250mg, 1g, 100mg, 500mg, 5g, 10g, 25g.