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

Catalogue Number	LIG-007
Lot Number	Sample COA
Batch Quantity	Sample COA
CAS Number	1955514-80-3
Mol. Formula	C₂₆H₂₉N₉O₃
Molecular Wt	515.57
Long Term Storage Condition	-20°C Freezer, Under inert atmosphere	Handling instruction	Sample COA
Chemical Name	Linagliptin Impurity IX
Synonyms	1-((1R)-3-(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)cyclohexyl)urea; Linagliptin N-Aminocarbonyl Impurity;

Test	Results
Appearance	Pale Yellow to Pale Beige 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