CAS 77883-43-3 appears in our catalog under these names: Doxazosin Mesylate, Doxazosin Mesilate, Doxazosin Mesylate, >95% (HPLC), Doxazosin mesylate/ 99.98% (existing batch purity), Doxazosin Mesylate. Offered by: Chemat Brand, Mikromol, LoGiCal, TRC, TargetMol. Available pack sizes: on request, 250mg, 10mg, 1g, 50mg, 200mg, 500mg, 100mg.