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左炔诺孕酮
详细说明：
18,19-Dinorpregn-4-en-20-yn-3-one,13-ethyl-17-hydroxy-,(17α)-(-)-(-)-13-
Ethyl-17-hydroxy-18,19-dinoxr-17α-pregn-4-en-20-yn-3-one [797-63-7]
质量标准:
美国药典25版
鉴别：符合规定
A: 红外吸收
熔程：232℃~ 239℃
比旋度：-30°~ -35°
干燥失重 ≤ 0.5 %
灼烧残渣：≤0.3%
乙炔化合物限度：7.81%~8.18%
层析杂质：
单个杂质≤0.5％
总杂质≤2.0％
含量: 98%~102%
Quality standard:
USP25
Identification:
A: Infrared Absorption
Melting range: 232℃~ 239℃
Specific rotation: between -30°and -35°
Loss on drying:≤0.5 %
Residue on ignition:≤0.3%
Limit of ethynyl group: 7.81%~8.18%
Chromatographic purity:
Single impurity≤0.5%
Sum of impurities≤2.0%
Assay: 98%~102%