PRODUCT NAME: Linagliptin Related Compound A
Date of Mfg: Sample COA	RETEST DATE: Sample COA

Catalogue Number	LIG-013
Item/Batch Number	Sample COA
Quantity	Sample COA
CAS Number	666816-98-4
Mol. Formula	C₁₀H₉BrN₄O₂
Molecular Wt	297.11
IUPAC	8-bromo-7-but-2-ynyl-3-methylpurine-2,6-dione
Synonyms	8-Bromo-3-methyl-7-(2-butynyl)-xanthine; 8-bromo-7-(but-2-yn-1-yl)-3-methyl-1H-purine-
Long Term Storage Condition	2-8°C Refrigerator
Handling instruction	Sample COA

Test	Results
Appearance	White Solid
Water content by KF/TGA	Sample COA
% Potency = [100 - (Water content by KF)] X HPLC Purity)] / 100	Sample COA
Identification by HNMR	Sample COA
Identification By IR	Sample COA
Mass (ESI)	Sample COA
Solubility	DMSO (Slightly), Methanol (Slightly)
Purity	>98.0%(T)(HPLC)
Analysis Date (Release Date)	Sample COA
Attachments	Sample COA
Other Information	Sample COA
Note: This material can be used as a referance standard and is for research purpose ONLY and not for human consumption