PRODUCT NAME: Rifaximin EP Impurity D
Date of Mfg: Sample COA	RETEST DATE: Sample COA

Catalogue Number	RFX-002
Lot Number	Sample COA
Batch Quantity	Sample COA
CAS Number	N/A
Mol. Formula	C43H49N3O12
Molecular Wt	799.86
Long Term Storage Condition	2-8°C Refrigerator	Handling instruction	Sample COA
Chemical Name	Rifaximin EP Impurity D
Synonyms	(2S,16Z,18E,20R,21S,22R,23R,24R,25S,26R,27S,28E)-5,6,20, 21,23-Pentahydroxy-27- methoxy-2,4,11,16,20,22,24,26-octamethyl-1,15-dioxo-1,2-dihydro-2,7- (epoxypentadeca[1,11,13]-trienoimino)[1]benzofuro[4,5-e] pyrido[1,2-a]ben

Test	Results
Appearance	Red solid
Identification by 1H NMR	Sample COA
Identification By IR	Sample COA
Mass (ESI)	Sample COA
Purity	NLT 95 % BY HPLC
Wt. Loss by TGA	Sample COA
% Potency	Sample COA
Solubility
QC Release Date	Sample COA
Attachments	Sample COA
Note: This material can be used as a referance standard and is for research purpose ONLY and not for human consumption