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

Catalogue Number	DPS-004
Item/Batch Number	Sample COA
Quantity	Sample COA
CAS Number	54616-64-7
Mol. Formula	C24H20N2O5S2
Molecular Wt	480.6 g/mol
IUPAC	4,4'-[Oxybis(4,1-phenylenesulfonyl)]dianiline
Synonyms	Dapsone O-Dimer Impurity; 4,4′-[Oxybis[(4,1-phenylene)sulfonyl]]dianiline; 4,4'-(Oxybis(4,1-phenylenesulfonyl))dianiline; 4,4′-[Oxybis[(4,1-phenylene)sulfonyl]]dianiline
Long Term Storage Condition	2-8°C Refrigerator
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
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