PRODUCT NAME: 3-Hydroxy impurity of Roflumilast
Date of Mfg: Sample COA	RETEST DATE: Sample COA

Catalogue Number	ROF-003
Item/Batch Number	Sample COA
Quantity	Sample COA
CAS Number	1391052-76-8
Mol. Formula	C₁₃H₈Cl₂F₂N₂O₃
Molecular Wt	349.12
IUPAC	N-(3,5-dichloropyridin-4-yl)-4-(difluoromethoxy)-3-hydroxybenzamide
Synonyms	3-(Hydroxy)-N-(3,5-dichloro-4-pyridinyl)-4-(difluoromethoxy)benzamide; 3-O-Decyclopropyl Roflumilast; Roflumilast Impurity E
Long Term Storage Condition	Store At 2-8°C
Handling instruction	Sample COA

Test	Results
Appearance	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	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