| 摘要 |
The invention relates to a compound of formula I wherein R1, R2 and R3 are identical or different and each is H or alkyl of 1-6 carbon atoms, R4 is H or methyl, R5 is phenyl or chlorophenyl, and/or physiologically acceptable salts thereof and its use in compositions, especially topical, cosmetic and/or personal care compositions, and compositions containing said compound. |
