CAS 1668-00-4 appears in our catalog under these names: ArsenazoIII(Spectrophotometricreagentsforuranium,thorium,zirconiumandothermetals,andindicatorsforsulfatetitrationwithbariumprecipitation), Arsenazo III, Arsenazo III , Arsenazo III, 70.00%, Arsenazo III. Offered by: GLPBio, Thermo Scientific (Alfa Aesar), Chemat, Biosynth, TCI. Available pack sizes: 10g, 5g, 100mg, 25g, 2g, 1g, 100 mg.