Pharmaceutical Reference Standards / Impurity Standards

Rifaximin(Rifacol)
Rifaximin(Rifacol)
  • CAT. No.R270000
  • CAS. No.80621-81-4
  • Mol. F.C43H51N3O11
  • Mol. W.785.88 g/mol
  • Stock Status:Instock
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Rifaximin EP Impurity H
Rifaximin EP Impurity H
  • CAT. No.R270002
  • CAS. No.1210022-90-4
  • Mol. F.C43H51N3O12
  • Mol. W.801.88 g/mol
  • Stock Status:Under Synthesis
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Rifaximin EP Impurity B
Rifaximin EP Impurity B
  • CAT. No.R270003
  • CAS. No.13929-35-6
  • Mol. F.C39H49NO14
  • Mol. W.755.80 g/mol
  • Stock Status:Instock
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Rifaximin Impurity 1
Rifaximin Impurity 1
  • CAT. No.R270005
  • CAS. No.1351775-04-6
  • Mol. F.C43H49N3O11
  • Mol. W.783.86 g/mol
  • Stock Status:Custom Synthesis
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Rifaximin EP Impurity G
Rifaximin EP Impurity G
  • CAT. No.R270006
  • CAS. No.80621-76-7
  • Mol. F.C43H49N3O11
  • Mol. W.783.86 g/mol
  • Stock Status:Under Synthesis
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Rifaximin Impurity 2
Rifaximin Impurity 2
  • CAT. No.R270007
  • CAS. No.1351775-03-5
  • Mol. F.C43H49N3O11
  • Mol. W.783.86 g/mol
  • Stock Status:Custom Synthesis
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Rifamycin O
Rifamycin O
  • CAT. No.R270008
  • CAS. No.14487-05-9
  • Mol. F.C39H47NO14
  • Mol. W.753.79 g/mol
  • Stock Status:Instock
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25-Desacetyl Rifaximin
25-Desacetyl Rifaximin
  • CAT. No.R270009
  • CAS. No.80621-88-1
  • Mol. F.C41H49N3O10
  • Mol. W.743.84 g/mol
  • Stock Status:Under Synthesis
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Rifampicin N-oxide
Rifampicin N-oxide
  • CAT. No.R270010
  • CAS. No.51963-55-4
  • Mol. F.C43H58N4O13
  • Mol. W.838.94 g/mol
  • Stock Status:Under Synthesis
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Rifaximin EP Impurity D
Rifaximin EP Impurity D
  • CAT. No.R270011
  • CAS. No.NA
  • Mol. F.C43H49N3O12
  • Mol. W.799.86 g/mol
  • Stock Status:Custom Synthesis
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Rifaximin Impurity 3
Rifaximin Impurity 3
  • CAT. No.R270012
  • CAS. No.NA
  • Mol. F.C43H49N3O11
  • Mol. W.783.88 g/mol
  • Stock Status:Custom Synthesis
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Rifaximin EP Impurity D & H
Rifaximin EP Impurity D & H
  • CAT. No.R270013
  • CAS. No.NA
  • Mol. F.C43H49N3O12.C43H51N3
  • Mol. W.1601.78 g/mol
  • Stock Status:Custom Synthesis
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Rifaximin 11-Desmethyl Impurity
Rifaximin 11-Desmethyl Impurity
  • CAT. No.R270014
  • CAS. No.NA
  • Mol. F.C42H49N3O11
  • Mol. W.771.85 g/mol
  • Stock Status:Custom Synthesis
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Rifaximin Beta Polymorphic Form
Rifaximin Beta Polymorphic Form
  • CAT. No.R270015
  • CAS. No.80621-81-4
  • Mol. F.C43H51N3O11
  • Mol. W.785.88 g/mol
  • Stock Status:Instock
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Rifaximin Gamma Form
Rifaximin Gamma Form
  • CAT. No.R270016
  • CAS. No.80621-81-4
  • Mol. F.C43H51N3O11
  • Mol. W.785.88 g/mol
  • Stock Status:Instock
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Rifaximin Delta Form
Rifaximin Delta Form
  • CAT. No.R270017
  • CAS. No.80621-81-4
  • Mol. F.C43H51N3O11
  • Mol. W.785.88 g/mol
  • Stock Status:Custom Synthesis
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Rifaximin EP Impurity E Sodium
Rifaximin EP Impurity E Sodium
  • CAT. No.R270018
  • CAS. No.133956-65-7
  • Mol. F.C37H45NO12.Na
  • Mol. W.718.74 g/mol
  • Stock Status:Custom Synthesis
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Rifaximin Epsilon Polymorphic Form
Rifaximin Epsilon Polymorphic Form
  • CAT. No.R270019
  • CAS. No.80621-81-4
  • Mol. F.C43H51N3O11
  • Mol. W.785.88 g/mol
  • Stock Status:Custom Synthesis
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Rifaximin Alpha Form
Rifaximin Alpha Form
  • CAT. No.R270020
  • CAS. No.80621-81-4
  • Mol. F.C43H51N3O11C
  • Mol. W.785.88 g/mol
  • Stock Status:Instock
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Isotope Labelled Compounds

Rifaximin-D6
Rifaximin-D6
  • CAT. No.R270004
  • CAS. No.1262992-43-7
  • Mol. F.C43H45D6N3O11
  • Mol. W.791.92 g/mol
  • Stock Status:Instock
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