| 摘要 |
The present invention concerns Pyridinium-Betain compounds of the following general formula (A) <CHEM> wherein R1 is taken from the group consisting of a rest of primary L-amino acid, X is taken from the group consisting of OH and O<-> Y is taken from the group consisting of OH and O<-> and wherein the counter-ion is taken from the group consisting of sodium, potassium, ammonium, calcium, magnesium, chloride, nitrate, carbonate, sulfate, phosphate, and thelike. |
