项目Item 检测标准Test Criterion 结果Result 外观Appearance 白色结晶粉末 white to off-white Powder 符合Conforms 含量Assay min 98.0% 99.1% 比旋度Specific rotation -18° to -21°(C=4,H2O) -19.56° 干燥失重Loss on drying max 0.50% 0.30% 非动物来源Non-animal origin Conforms Conforms 注意事项Note 干燥密封保存Sealed dry preservation 结论CONCLUSION: This batch meets the test criterion.