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- 无色针状结晶,无臭无味。在空气和日光下都不稳定。不溶于水,易溶于乙醇、乙醚或氯仿中。遇无机酸、醛类,或者温度过高时,都易分解。1 USP unit = 1 I.U.
比光旋度: 82°
熔点:114 °C
质量标准
外观Appearance白色至黄白色结晶粉末
红外光谱鉴别Infrared spectrometry 符合
熔点Melting point 112°C - 117°C
纯度Purity≥98.0% (HPLC)
比旋度Specific rotation [a]20/D +100.0 ~ +109.0 °(C=1.5, 乙醇)
吸光率Specific abs. A (1%/1cm)460 - 490 (265 nm, EtOH 96%)
麦角甾醇ergosterol< 0.2% (TLC)
效价Potency 40,000,000 USP UNITS/G 1 USP UNIT = 1 I.U.
贮存:2-8°C避光储存
用途:主要用于防治佝偻病和骨质软化病。可由麦固醇经紫外光照射转化而成。
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