CAS No.:50-14-6
MF:C28H44O
Appearance:white Powder
Specifications
1.Labeyond Chemicals--A Respectable supplier from China
2. More than 12 years experience in global trading and chemicals
Product Name:Vitamin D2
Molecular Formula: C28H44O
CAS Number: 50-14-6
Certificate of Analysis
Product Name
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Vitamin D2
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Batch Number
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120601
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Potency
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40,000,000IU/ g
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Analysis Date
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20,06,2012
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Report Date
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25,06, 2012
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Analysis Based on
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USP 29/BP2000
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Product Manufactured by
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Sichuan Yuxin Pharmaceutical Co., Ltd .
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Product Provided by
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Sichuan Yuxin Pharmaceutical Co., Ltd .
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Product Quantity
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500kg
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Manufactured Date
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18,06, 2012
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Expiry
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17, 06,2014
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Items
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Standard
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Analyzed Results
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Properties
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Should be a white needle-shape crystal or white crystallized powder ; give out no smell , no taste ; be easy to lose activity in air or light .
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White crystallized powder without any smell or taste .
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Identification
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1. Dissolve about 0.5mg of vitamin D2 into 5ml chloroform, add 0.3ml acetic anhydride and 0.1ml sulfuric acid, shake and mix vigorously. The mixture is initially produced bright red color , and then rapidly changes violet and finally blue to green .
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Positive reaction
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2. The infrared absorption spectroscopy should be in according with spectrum of comparison
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The infrared absorption spectrum of the sample is in according with the standard
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Examination
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Dissolve 10mg of vitamin D2 into 2ml of 90% ethanol, add 2ml solution of digitalis saponin and incubate for 18 hours. No precipitation or cloud should be observed.
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Passed
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Melting Range
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Between 115°C and 119°C
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115.1°C
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Specific Rotation
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Between +103 and +106
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+104.6
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Reducing Substances
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Light absorption of sample<Light absorption of standard sample
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Complies
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Ergosterol
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None
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None
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Solubility
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Freely soluble in alcohol
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Complies
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Organic Volatile Impurities
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Benzenenot more than2 p p m
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None
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Content
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Between 97 % and 103 %
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100.05%
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Total Microbacterial Count
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Not more than 1000CFU/g
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20CFU/g
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Total Yeast & Mould
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Not more than 100CFU/g
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5CFU/g
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Escherichia Coli Presence
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Absent
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Absent
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Store Condition
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below 10°C
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Conclusion
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The sample is in accordance with USP29/BP2000
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