85-2398-52　Vitamin D2 USP/BP/CP 5g　CAS No:50-14-6　236772

特徴

• Synonyms:Ergocalciferol
• Molecular Formula:
C₂₈H₄₄O
• Molecular Weight:
396.70
• MDL No:
MFCD00166988
• Grade:
USP/BP/CP
• Potency:
~40,000,000 IU/g
• Purity (HPLC):97.0-103.0%Appearance:
White to off-white crystalline powder
• Melting Point:
115-119 °C
• Optical Rotation:
+103 to +106º
• Solubility:Acetone, Chloroform, DMSO, Ethanol, Methanol
• Odor:Odorless
• Infrared Spectrum:Conforms to structure
• Reducing Substances:≤ 20 ppm
• Organic Volatile Impurities:Conforms to USP
• Warnings:
Highly toxic! Light sensitive
• Storage Temp:
Store at 0-8 °C
• Additional Notes: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.
• Dissolve 10mg of vitamin D2 into 2mL of 90% ethanol, add 2mL solution of digitalis saponin and incubate for 18h. No precipitation or cloud should be observed.
• Contains no Ergosterol.