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

Catalogue Number	LIG-031
Lot Number	Sample COA
Batch Quantity	Sample COA
CAS Number	2443735-53-1
Mol. Formula	C38H42N10O4
Molecular Wt	702.82 g/mol
Long Term Storage Condition	2°C to 8°C	Handling instruction	Sample COA
IUPAC	rel-2-((R)-3-Aminopiperidine-1-carbonyl)-N-((R)-1-(7-(but-2-yn-1-yl)-3-methyl-1-((4-methylquinazolin-2-yl)methyl)-2,6-dioxo-2,3,6,7-tetrahydro-1H-puri
Chemical Name	Linagliptin EP Impurity E
Synonyms

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