(7a,17a)-17-Hydroxy-3-oxo-pregna-4,9(11)-diene-7,21-dicarboxylicacid g-lactone methyl ester CAS NO.95716-70-4

Chemical name： Pregna-4,9(11)-diene-7,21-dicarboxylic acid, 17-hydroxy-3-oxo-, g-lactone, methyl ester, (7a,17a)- Molecular Structure： Molecular Formula：C22H30O Molecular Weight：310.478 C…

Chemical name： Pregna-4,9(11)-diene-7,21-dicarboxylic acid, 17-hydroxy-3-oxo-, g-lactone, methyl ester, (7a,17a)- Molecular Structure： Molecular Formula：C22H30O Molecular Weight：310.478 CAS NO.：95716-70-4 Important Specifications: Standard: In-house Standard Appearance: Almost white to pale yellow crystalline powder Residue on ignition：≤0.25% Loss on drying：≤1.0% Heavy Metals：≤20ppm Single impurity：≤3.0% Total impurity: ≤5.0% Assay：95.0%~101.0% Packing：1kg/tin or 5kg/tin