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Category :[Technology][Pharmaceutical Industry]
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[Visitor (111.8.*.*)]answers [Chinese ]Time :2020-03-30
This product is slightly soluble in water and insoluble in ethanol, chloroform or ether. Specific rotation Take this product, accurately weigh, dissolve and dilute with water to a solution containing 5mg per 1ml, and measure according to law. The specific rotation is 144 degrees to 158 degrees. Absorption coefficient Take this product, weigh it precisely, dissolve it with water and dilute it to a solution containing about 20μg per 1ml. Measure the absorbance at a wavelength of 262nm according to spectrophotometry. The absorption coefficient is 220-245.


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