

Pregn-4-ene-3,20-dione,11,17,21-trihydroxy-,(11β)-cortisol [50-23-7]
质量标准:
美国药典25版
鉴别:符合规定
A: 红外吸收
B: 紫外吸收
比旋度:+150°~ +156°
干燥失重 ≤ 1.0 %
灼烧残渣:可以忽略
层析杂质:
单个杂质≤0.5%
总杂质≤2.0%
有机挥发杂质: 符合要求
含量: 97%~102%
Quality standard:
USP25
Identification:
A: Infrared Absorption
B: Ultraviolet Absorption
Specific rotation :between +150°and +156°
Loss on drying:≤ 1.0 %
Residue on ignition: negligible from 100mg
Chromatographic Purity:
Individual purity≤0.5%
Total purity≤2.0%
Organic volatile impurities: meets the requirements
Assay: 97%~102%
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