摘要 |
The invention relates to the use of one or more compounds selected from compounds of formulae Ia and Ib, the physiologically compatible salts of compounds of formula Ia and Ib and the stereoisomer forms of compounds of formula La and Ib, wherein R<SUP>1</SUP>, R<SUP>2</SUP>, R<SUP>3</SUP>, R<SUP>4 </SUP>and n have the meaning cited in claim 1 . Said compounds can be used advantageously in a preparation suitable for oral care
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