CAS 2429-73-4 appears in our catalog under these names: Direct Blue 2 (Technical Grade), Direct Blue 2, Direct Blue 2, Chlorazol black bh, Direct Black BH (sodium). Offered by: TRC, GLPBio, TCI, Chemat, MedChemExpress. Available pack sizes: 2,5g, 250mg, 500mg, 5g, 25g, 100 mg, 1 g.