Noun
benzotriazole (plural benzotriazoles)
(organic chemistry) A bicyclic heterocycle consisting of a benzene ring fused to that of triazole
Absorbent UV-328 by TianJin North JinHeng Chemical Plant is a highly effective 2-(2-hydroxy-3'-5'-di-tert-pentylphenyl) benzotriazole. Source: Internet
EVERSTAB 328 by Everspring Chemical is a 2-(2'-hydroxy-3',5'-di-tert-amylphenyl)-benzotriazole based grade. Source: Internet