PRODUCT NAME: Vardenafil Carboxylic Acid Impurity
Date of Mfg: Sample COA	RETEST DATE: Sample COA

Catalogue Number	VAR-002
Item/Batch Number	Sample COA
Quantity	Sample COA
CAS Number	358390-39-3
Mol. Formula	C₁₈H₂₀N₄O₄
Molecular Wt	356.38
Synonyms	3-(1,4-Dihydro-5-methyl-4-oxo-7-propylimidazo[5,1-f][1,2,4]triazin-2-yl)-4-ethoxybenzoic Acid;
Long Term Storage Condition	Refrigerator
Handling instruction	Sample COA

Test	Results
Appearance	Pale Yellow to Light Brown 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
Purity	NLT 98%
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