| abstract |
(57) [Summary] [Structure] The following general formula (1) (In the formula, R 1 represents a linear or branched alkyl or alkenyl group having 6 to 20 carbon atoms which may be substituted by a fluorine atom, and one of X 1 and X 2 represents a basic amino acid residue. , The other represents a hydrogen atom, an alkali metal, ammonium, an alkylamine, an alkanolamine or a basic amino acid residue, and n represents a number of 0 to 4), and an oral composition containing the phosphoric acid monoester . [Effect] It has an excellent tooth surface protection effect, is stable, and has a good taste. |