FIELD: organic chemistry. SUBSTANCE: invention describes compounds of the formula (I): X-R where X is Michael's acceptor; R is 
-alkyl-YZ, 
-alkenyl-YZ, 
-alkynyl-YZ where Y means O, NR4,S(O) n, C(O); n = 0-2; R4 is H, 
-alkyl, 
-alkenyl; Z means UV-chromophore group showing properties providing its use in sun-protective composition. Invention describes the use of the known compounds taken among of the above mentioned compounds for making the sun-protective composition and method of skin protection from sun effect. EFFECT: enhanced effectiveness of composition. 15 cl, 2 tbl, 2 dwg
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