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

Catalogue Number	LIG-033
Lot Number	Sample COA
Batch Quantity	Sample COA
CAS Number	886588-63-2
Mol. Formula	C33H30N8O4
Molecular Wt	602.7 g/mol
Long Term Storage Condition	2°C to 8°C	Handling instruction	Sample COA
IUPAC	7-(but-2-yn-1-yl)-8-[(3R)-3-(1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)piperidin-1-yl]-3-methyl-1-[(4-methylquinazolin-2-yl)methyl]-3,7-dihydro-1H-purine
Chemical Name	Linagliptin EP Impurity I
Synonyms	N-Phthalimide-linagliptin

Test	Results
Appearance	White To Off-White
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	Soluble In DMSO
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