
Pregna-2,4-dien-20-yno[2,3-d]isoxazol-17-ol,(17α)-17α-pregna-2,4-dien-20-
yno[2,3-d]isoxazol-17-ol [17230-88-5]
质量标准: Quality standard:
美国药典27版 USP 27
鉴别:符合规定 Identification:
A: 红外吸收 A: Infrared Absorption
B: 紫外吸收 B: Ultraviolet Absorption
比旋度:+21°~ +27° Specific rotation: between +21°and +27°
干燥失重: ≤ 2.0 % Loss on drying: ≤ 2.0 %
层析杂质: Chromatographic Purity:
单个杂质: ≤0.5% Individual purity: ≤0.5%
总杂质: ≤1.0% Total purity: ≤1.0%
含量: 97%~102% Assay: 97%~102%
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