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

Catalogue Number	RFX-004
Lot Number	Sample COA
Batch Quantity	Sample COA
CAS Number	N/A
Mol. Formula	C43H49N3O12 : C43H51N3O12
Molecular Wt	799.9 : 801.9 g/mol
Long Term Storage Condition	2°C to 8°C	Handling instruction	Sample COA
IUPAC	(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-(e
Chemical Name	Rifaximin EP Impurity D & H
Synonyms

Test	Results
Appearance	Red Solid
Identification by 1H NMR	Sample COA
Identification By IR	Sample COA
Mass (ESI)	Sample COA
Purity	NLT 94%
Wt. Loss by TGA	Sample COA
% Potency	Sample COA
Solubility	Soluble In Methanol
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