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

Catalogue Number	DXC-001
Item/Batch Number	Sample COA
Quantity	Sample COA
CAS Number	6543-77-7
Mol. Formula	C₂₂H₂₄N₂O₈
Molecular Wt	444.43
IUPAC	(4R,4aR,5S,5aR,6R,12aR)-4-(dimethylamino)-1,5,10,11,12a-pentahydroxy-6-methyl-3,12-dioxo-4a,5,5a,6-tetrahydro-4H-tetracene-2-carboxamide
Synonyms	4-Epi Doxycycline;(4R,4aR,5S,5aR,6R,12aS)-4-(Dimethylamino)-1,4,4a,5,5a,6,11,12a-octahydro-3,5,10,12,12a-pentahydroxy-6-methyl-1,11-dioxo-2-naphthacenecarboxamide; 6-Deoxy-4-epioxytetracycline
Long Term Storage Condition	2-8°C Refrigerator
Handling instruction	Sample COA

Test	Results
Appearance	Light Yellow 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, Heated), Water (Slightly)
Purity	93.40 % 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