PRODUCT NAME: Linagliptin Impurity-VII
Date of Mfg: Sample COA	RETEST DATE: Sample COA

Catalogue Number	LIG-003
Lot Number	Sample COA
Batch Quantity	Sample COA
CAS Number	-
Mol. Formula	C31H38N8O7
Molecular Wt	634.70
Long Term Storage Condition	-20°C Freezer	Handling instruction	Sample COA
Chemical Name	Linagliptin Impurity-VII
Synonyms	7-(but-2-yn-1-yl)-3-methyl-1-((4-methylquinazolin-2-yl)methyl)-8-(3-((3,4,5,6-tetrahydroxy-2-oxohexyl)amino)piperidin-1-yl)-3,7-dihydro-1H-purine-2,6-dione.

Test	Results
Appearance	Yellow Solid
Identification by 1H NMR	Sample COA
Identification By IR	Sample COA
Mass (ESI)	Sample COA
Purity	NLT 98%
Wt. Loss by TGA	Sample COA
% Potency	Sample COA
Solubility	DMSO (Slightly), Methanol (Slightly, Heated, Sonicated)
QC Release Date	Sample COA
Attachments	Sample COA
Note: This material can be used as a referance standard and is for research purpose ONLY and not for human consumption