CAS 67221-50-5 appears in our catalog under these names: 4-Amino-1H-pyrazole-5-carboxamide 97%, 4-amino-1H-pyrazole-5-carboxamide, 97%, 4-amino-2H-pyrazole-3-carboxamide, 95%, 4-Amino-1H-pyrazole-5-carboxamide, 97%, 97%. Offered by: Ambeed, Fluorochem, Combi-blocks, Chemat. Available pack sizes: 100mg, 250mg, 1g, 5g, 500mg, 2.5g, 10g.