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Rifaximin

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  Post Date: Aug 06,2013
  Expiry Date: Feb 02,2014
  Detailed Description: Cas No. :80621-81-4 Specifications

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Specifications
Product:Rifaximin/ Xifaxan EP/USP/BP
Formulate:C43H51N3O11
Formula weight:785.88
CAS: 80621-81-4

Appearance :Orange-red or dark red powder;odourless and slightly bitter

Items
Standard
Results

Description
Reddish Orange Powder
Conforms
Identification
Positive
Positive
Acidity(PH value)
5.5-7.0
6.1
Related Materials
Single Impurity ≤0.1%
0.1%
Impurity D+H <0.5%
0.4%
Total Impurity<1.0%
0.8%
Loss on drying
≤4.5%
2.6%
Solubility
Practically insoluble in water, soluble in acetone and in methanol
Conforms
Residual solvents
<5000ppm
<5000ppm
Residue on ignition
≤0.1%
0.10%
Mesh size
Pass 120 mesh
Conforms
Heavy metals
≤20ppm
Conforms
Assay
>97.0%-102%
99.0%
Conclusion
It conforms to EP5.0

  CAS Registry Number:

80621-81-4
  Synonyms: ;2S-Acetyloxy-5,6,21,23-tetrahydroxy-27-methoxy-2,4,11, 16,20,22,24,26-octamethyl-2,7-(epoxypentoeleca(1,11,13)trienimino)benzofuro[4,5-e]pyride[1,2-a]benzimidazole-1,15(2H)-dione;(2S,20S,21S,22R,23R,24S,25S,26S,27S,28E)-5,6,21,23-tetrahydroxy-27-methoxy-2,4,11,16,20,22,24,26-octamethyl-1,15-dioxo-1,2-dihydro-2,7-(epoxypentadeca[1,11,13]trienoimino)furo[2'',3'':7',8']naphtho[1',2':4,5]imidazo[1,2-a]pyridin-25-yl acetate;(2S,16Z,18E,20S,21S,22R,24R,25S,26R,27S,28E)-5,6,21,23-tetrahydroxy-27-methoxy-2,4,11,16,20,22,24,26-octamethyl-1,15-dioxo-1,2-dihydro-2,7-(epoxypentadeca[1,11,13]trienoimino)furo[2'',3'':7',8']naphtho[1',2':4,5]imidazo[1,2-a]pyridin-25-yl acetate;
  Molecular Formula: C43H51N3O11
  Molecular Weight: 785.8785
  Molecular Structure: 80621-81-4 Rifaximin

  Company: Hubei MaxSource Chem Co., Ltd.     [ China ]        
  Contact: Bale Yang
  Tel: +86-027-83555670
  Fax: 862783555670
  Email: maxsource12@hotmail.com
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