Synonyms: 9alpha-Fluoro-11beta,17alpha,21-trihydroxy-16alpha-methylpregn-1,4-diene-3,20-dione
Molecular Formula: C22H29FO5
Molecular Weight: 392.46
CAS: 50-02-2
EINECS: 200-003-9
Melting point: 255-264 oC
alpha: 75 o (c=1, dioxane)
Water solubility: 10 mg/100 mL (25 oC)
Appearance:white crystal power
Application: antiinflammatory action and antianaphylaxis,be appliable to rheumatoid arthritis and collagen disease
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Item
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Standard
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Result
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Appearance
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A whitecrystalline powder
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White crystalline powder
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Melting point
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About 255°C
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255°C
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Absortances
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380 to 410
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390.9
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Specific optical rotation
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+75°~+80°
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+77.1°
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Identification
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(1)Complies by IR;
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Conforms
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Identification
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(2) Complies by TLC
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Conforms
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Related substances
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impurity≤2.0%
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Conforms
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Loss on drying
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≤0.5%
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0.10%
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Assay
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97%~104.0%
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99.80%
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