PRODUCT NAME: Linagliptin N,N’-Methylene Dimer
Date of Mfg: Sample COA	RETEST DATE: Sample COA

Catalogue Number	LIG-029
Lot Number	Sample COA
Batch Quantity	Sample COA
CAS Number	2489212-72-6
Mol. Formula	C51H56N16O4
Molecular Wt	957.1 g/mol
Long Term Storage Condition	2°C to 8°C	Handling instruction	Sample COA
IUPAC	8,8'-((3R,3'R)-(methylenebis(azanediyl))bis(piperidine-3,1-diyl))bis(7-(but-2-yn-1-yl)-3-methyl-1-((4-methylquinazolin-2-yl)methyl)-3,7-dihydro-1H-pur
Chemical Name	Linagliptin N,N’-Methylene Dimer
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 97%
Wt. Loss by TGA	Sample COA
% Potency	Sample COA
Solubility	Soluble In DMSO, Methanol
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