CAS number： 83-43-2
Molecular formula： C22H30O5
molecular weight： 374.4706
Chemical structure：
|
Product Name |
Methyl Prednisolone |
|
|
Shelf Life |
2 years |
|
|
Specification |
USP38 |
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|
Item |
Specification |
Result |
|
Character |
White to almost white crystalline powder |
Almost white crystalline powder |
|
Specific Optical Rotation |
+79° to +86° | +83.6° |
|
Identification |
(1)Complies by IR |
Conforms |
| (2)△E/E85≤3.0% |
0.4% |
|
|
(3)Positive reaction |
Positive |
|
| Test |
Individual impurity not more than 1.0% |
0.26% |
|
Total impurities not more than 2.0% |
0.99% |
|
|
Residue on ignition |
Not more than 0.2% |
0.08% |
|
Loss on drying |
Not more than 1.0% |
0.5% |
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Residual solvent |
Methnol not more than 3000ppm |
2ppm |
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Ethanol not more than 5000ppm |
1327ppm |
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|
Acetone not more than 5000ppm |
1ppm |
|
|
Ethyl Acetate nor more than 5000ppm |
2ppm |
|
|
Assay |
Contains 97.0% to 103.0% of C22H30O5 calculated on the dried basis |
99.8% |
|
Particle Size |
It should be 90% below 20um |
13.22um |