CAS Registry Number

CAS 3896-11-5 — 2-tert-Butyl-6-(5-chloro-2H-benzotriazol- 2-yl)-4-methylphenol

2-tert-Butyl-6-(5-chloro-2H-benzotriazol-2-yl)-4-methylphenol, commonly known as **UV-326**, is a high-performance ultraviolet light absorber widely used in plastics, coatings, adhesives, and rubber to prevent degradation from UV exposure. This chemical enhances photostability, extending the lifespan of materials exposed to sunlight or artificial UV sources. This compound has a CAS number of 3896-11-5, with the molecular formula C17H18ClN3O and a molecular weight of 315.80 g/mol. It is stable at ambient storage conditions and carries no signal word for hazard classification. Molekula supplies UV-326 from research to bulk quantities with full documentation and ISO 9001:2015 traceability.