CAS 1871-22-3 appears in our catalog under these names: Tetrazolium Blue Chloride (>90%), Blue Tetrazolium, Blue Tetrazolium chloride , Tetrazolium Blue Chloride, 95.00%, Tetrazolium blue chloride. Offered by: TRC, GLPBio, Thermo Scientific (Alfa Aesar), Chemat, Biosynth. Available pack sizes: 10g, 1g, 5g, 25g, 50g, 100g, 1 g, 500 mg.