UV Absorber UV-531 Benzophenone-12(BP-12) Trivial name 1843-05-6 Cas No. C21H26O3 MF ≥98.5%(HPLC) Purity 25kgs/carton or Drum Package UV Absorber UV-1577 Trivial name 147315-50-2 Cas No. C27H27N3O2 MF ≥98.5%(HPLC) Purity 25kgs/carton or Drum Package UV Absorber 234 Trivial name 70321-86-7 Cas No. C30H29N3O MF ≥99%(HPLC) Purity 25kgs/carton or Drum Package Tinuvinبیشتر بخوانید