PRODUCT NAME: Metformin EP Impurity E (Sulfate salt)
Date of Mfg: Sample COA	RETEST DATE: Sample COA

Catalogue Number	MEF-012
Item/Batch Number	Sample COA
Quantity	Sample COA
CAS Number	36801-25-9
Alternate CAS Number	1609-00-3 (free base) ; 1674-62-0 (HCl salt)
Mol. Formula	C3H9N5 : H2SO4
Molecular Wt	115.1 : 98.1 g/mol
IUPAC	1-Methylbiguanide (Sulfate salt)
Synonyms	Metformin Related Compound B ; N-Desmethyl Metformin
Long Term Storage Condition	2°C to 8°C
Handling instruction	Sample COA

Test	Results
Appearance	White to Off-White Solid
Water content by KF/TGA	Sample COA
% Potency = [100 - (Water content by KF)] X HPLC Purity)] / 100	Sample COA
Identification by HNMR	Sample COA
Identification By IR	Sample COA
Mass (ESI)	Sample COA
Solubility	No Data Available
Purity	NLT 97%
Analysis Date (Release Date)	Sample COA
Attachments	Sample COA
Other Information	Sample COA
Note: This material can be used as a referance standard and is for research purpose ONLY and not for human consumption