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

Catalogue Number	LIG-004
Lot Number	Sample COA
Batch Quantity	Sample COA
CAS Number	-
Mol. Formula	C₂₆H₂₈N₈O₃
Molecular Wt	500.55
Long Term Storage Condition	Hygroscopic, -20°C Freezer, Under inert atmosphere	Handling instruction	Sample COA
IUPAC	(S)-N-(1-(7-(but-2-yn-1-yl)-3-methyl-1-((4-methylquinazolin-2-yl)methyl)-2,6-dioxo-2,3,6,7-tetrahydro-1H-purin-8-yl)piperidin-3-yl)formamide
Chemical Name	Linagliptin Impurity-VIII
Synonyms	(S)-N-(1-(7-(but-2-yn-1-yl)-3-methyl-1-((4-methylquinazolin-2-yl)methyl)-2,6-dioxo-2,3,6,7-tetrahydro-1H-purin-8-yl)piperidin-3-yl)formamide

Test	Results
Appearance	White to Off-White 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	Chloroform (Slightly), DMSO (Slightly), Methanol (Slightly, Heated)
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