PRODUCT NAME: Linagliptin Dimer Imputiry 2
Date of Mfg: Sample COA	RETEST DATE: Sample COA

Catalogue Number	LIG-001
Lot Number	Sample COA
Batch Quantity	Sample COA
CAS Number	1418133-47-7
Mol. Formula	C₅₀H₅₆N₁₆O₄
Molecular Wt	945.08
Long Term Storage Condition	Amber Vial, -20°C Freezer, Under inert atmosphere	Handling instruction	Sample COA
Chemical Name	Linagliptin Dimer Imputiry 2
Synonyms	8-[(3R)-3-Amino-1-piperidinyl]-1-[[4-[[2-[[8-[(3R)-3-amino-1-piperidinyl]-7-(2-butyn-1-yl)-2,3,6,7-tetrahydro-3-methyl-2,6-dioxo-1H-purin-1-yl]methyl]-1,4-dihydro-4-methyl-4-quinazolinyl]methyl]-2-quinazolinyl]methyl]-7-(2-butyn-1-yl)-3,7-dihydro-3-methyl-1H-purine-2,6-dione; 8-((R)-3-Aminopiperidin-1-yl)-1-((4-((2-((8-((R)-3-aminopiperidin-1-yl)-7-(but-2-yn-1-yl)-3-methyl-2,6-dioxo-2,3,6,7-tetrahydro-1H-purin-1-yl)methyl)-4-methyl-1,4-dihydroquinazolin-4-yl)methyl)quinazolin-2-yl)methyl)-7-(but-2-yn-1-yl)-3-methyl-1H-purine-2,6(3H,7H)-dione; Linagliptin Dimer Impurity

Test	Results
Appearance	Off-White to Pale Yellow 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)
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