| 摘要 |
PROBLEM TO BE SOLVED: To obtain a new crystal of 5-aminolevulinic acid phosphate having high heat stability, a high melting point and excellent hygroscopicity resistance and to provide a method for producing the same. SOLUTION: The 5-aminolevulinic acid phosphate has characteristic peaks at 7.9°±0.2°, 15.8°±0.2°, 18.9°±0.2°, 20.7°±0.2°, 21.1°±0.2°, 21.4°±0.2°, 22.9°±0.2°, 33.1°±0.2°and 34.8°±0.2°as diffraction angle 2θby powder X-ray diffraction. The method for producing the 5-aminolevulinic acid phosphate is provided. COPYRIGHT: (C)2008,JPO&INPIT
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