CAS 18489-25-3 appears in our catalog under these names: 5–Benzyl–1H–Tetrazole, 5-Benzyl-1H-tetrazole, 99% , 5-Benzyl-1H-tetrazole, 5-Benzyl-1H-tetrazole, >98.0%(HPLC)(T), 5-Benzyl-1H-Tetrazole, 98%, 98%. Offered by: GLPBio, Thermo Scientific (Alfa Aesar), Biosynth, TCI, Chemat. Available pack sizes: 100g, 25g, 5g, 1g, 250mg.