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Rifaximin

Rifaximin is a rifampicin derivative with weaker absorption kinetics; it inhibits DNA-dependent RNA polymerase. Rifaximin is an ansamycin antibacterial compound that is clinically used to treat small intestinal bacterial overgrowth in subjects with inflammatory bowel syndrome (IBS).

References PubMed ID::http://www.ncbi.nlm.nih.gov/pubmed/18959249

Cas No.

80621-81-4

Purity

≥98%

Formula

C43H51N3O11

Formula Wt.

785.88

Chemical Name

[2S-(2R*,16Z,18E,20R*,21R*,22S*,23S*,24S*,25R*,26S*,27R*,28E)]-25-(Acetyloxy)-5,6,21,23-tetrahydroxy-27-methoxy-2,4,11,16,20,22,24,26-octamethyl-2,7- [epoxypentadeca(1,11,13)trienimino]-benzofuro[4,5-e]- pyridol[1,2-a]benzimidazole-1,15(2H)-dione

Synonym

Rifacol; XIFAXAN; Fatroximin; Normix; Rifacol

Melting Point

200-205°C (dec)

Solubility

Soluble in alcohols, ethyl acetate, chloroform or toluene.

Appearance

A Red Orange Powder

Huhulescu S, Sagel U, Fiedler A, et al. Rifaximin disc diffusion test for in vitro susceptibility testing of Clostridium difficile. J Med Microbiol. 2011 Aug;60(Pt 8):1206-12. PMID: 21292853.

Majewski M, McCallum RW. Results of small intestinal bacterial overgrowth testing in irritable bowel syndrome patients: clinical profiles and effects of antibiotic trial. Adv Med Sci. 2007;52:139-42. PMID: 18217406.

CGP41252