GOYENCHEM UV-571 UV STABILIZER . ABSORBER CAS No. 23328-53-2 Category: Benzotriazole Light Absorber Series Tags: 23328-53-2, GOYENCHEM UV-571, UV Absorber Description Description Related products GOYENCHEMUV-5411 UV Absorber CAS NO.3147-75-9 GoyenchemUV-119 Light Stabilizer CAS No.106990-43-6 GOYENCHEMUV-531 UV Absorber CAS No. 1843-05-6