PRODUCT NAME: Tadalafil EP Impurity C
Date of Mfg: Sample COA	RETEST DATE: Sample COA

Catalogue Number	TAD-005
Item/Batch Number	Sample COA
Quantity	Sample COA
CAS Number	171596-28-4
Mol. Formula	C₂₂H₁₉N₃O₄
Molecular Wt	389.4
IUPAC	(2S,8R)-2-(1,3-benzodioxol-5-yl)-6-methyl-3,6,17-triazatetracyclo[8.7.0.03,8.011,16]heptadeca-1(10),11,13,15-tetraene-4,7-dione
Synonyms	(6S,12aR)-6-(1,3-Benzodioxol-5-yl)-2,3,6,7,12,12a-hexahydro-2-methylpyrazino[1',2':1,6]pyrido[3,4-b]indole-1,4-dione; (6S-cis)-6-(1,3-Benzodioxol-5-yl)-2,3,6,7,12,12a-‡hexahydro-2-methylpyrazino[1',2':1,6]pyrido[3,4-b]indole-1,4-dione; Tadalafil USP Impurity C; Tadalafil Impurity
Long Term Storage Condition	2-8°C Refrigerator
Handling instruction	Sample COA

Test	Results
Appearance	White to Off-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	Chloroform (Slightly), DMSO (Slightly)
Purity	95.72 % BY 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