CAS 50907-23-8 appears in our catalog under these names: 5-(4-Bromo-phenyl)-2h-tetrazole, 98%, 5-(4-Bromophenyl)-1H-tetrazole, 98%, 5-(4-Bromophenyl)-1H-tetrazole, >98.0%(HPLC)(qNMR), 5-(4-Bromophenyl)-1H-tetrazole 98%, 5-(4-Bromophenyl)-1H-tetrazole, 98%, 98%. Offered by: Combi-blocks, TCI, Ambeed, Chemat, Fluorochem. Available pack sizes: 1g, 25g, 5g, 10g, 250mg.