CAS 1150271-23-0 appears in our catalog under these names: 1-BOC-4-bromopyrazole, 98%, 1-Boc-4-bromopyrazole 97%, tert-Butyl 4-bromo-1H-pyrazole-1-carboxylate, 97%, 97%, tert-Butyl 4-Bromo-1H-pyrazole-1-carboxylate, 98%. Offered by: Combi-blocks, Ambeed, Chemat, Fluorochem. Available pack sizes: 10g, 5g, 25g, 100g, 1g, 500g, 50g, 250g.