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%