Patent ID: 7345090

Claim:
A compound of the formula I where X is O; Y is O, S or NH; a single or double bond may be provided between carbons C-2 and C-3; R 1 and R 2 , and R 3 and R 4 may be provided at any positions on the ring, and also R 1 , R 2 , R 3 , R 4 and R 5 may be identical or different and independently of one another are —H, —OH or -OA; and A is a group which absorbs UV radiation selected from: where n is 0, 1, 2 or 3, m is 0 or 1, k is 0, 1, 2, 3 or 4, and M is H, Na or K; and at least one of R 3 and R 4 is other than H and at least one ofthe groups R 1 , 1 2 , R 3 , R 4 or R 5 is -OA.