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CERTIFICATE OF ANALYSIS Reference Substance Diacerein Impurity G Batch No.

Date

Molecular Formula:C37H38O17 Molecular weight: 754.69 Sr.# 1

Test Appearance

Results Yellow color powder

------

Data ref.

2 3

Purity by HPLC MASS

96.95% Conform

Chromatogram attached Report attached

4

NMR

Conform

Report attached

Storage condition: Store at Refrigerator, Protect from direct sunlight.

Shipment date: This certificate of analysis is valid for two years from date of manufacturing provided the substance is stored under suitable conditions. Date of manufacturing: Retest Date: Document data reference:

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Diacerein impurity g  
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