Synonyms:
samsorb uv-3638 ; 2,2'-benzene-1,4-diylbis(4h-3,1-benzoxazin-4-one) ; uv-3638 ; uv absorber 3638 ; 2,2'-(1,4-phenylene)bis-4h-3,1-benzoxazin-4-one ; 2,2''-p-phenylenebis-4h-3,1-benzoxazin-4-one ; 2,2'-(p-phenylen)di-3,1-benzoxazin ; 1-benzoxazin-4-one,2,2'-(1,4-phenylene)bis-4h-3 ; cyasorb uv-3638 ; 2,2-(1,4-phenylene)bis((4h-3,1-benzoxazine-4-one)