Rifaximin-impurities | Pharmaffiliates

rifaximin and its Impurities

An anti- diarrheal drug, Rifaximin is an antibiotic. It hels in treating Irritable bowel syndrome. Rifaximin is a derivative of Rifamycin SV and a non-aminoglycoside semi-synthetic, nonsystemic antibiotic.Reference standards of Rifaximin API,and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.

Displaying 25 results for rifaximin Impurities
PA 18 27000

Rifaximin - API Standards

Rifaximin


  • Catalogue No.:PA 18 27000

  • CAS :

    80621-81-4

  • Molecular Formula : C43H51N3O11

  • Molecular Weight : 785.88

PA 18 27010

Rifaximin - Impurity A

4-Methylpyridin-2-amine


  • Catalogue No.:PA 18 27010

  • CAS :

    695-34-1

  • Molecular Formula : C6H8N2

  • Molecular Weight : 108.14

PA 18 27020

Rifaximin - Impurity B

Rifamycin B


  • Catalogue No.:PA 18 27020

  • CAS :

    13929-35-6

  • Molecular Formula : C39H49NO14

  • Molecular Weight : 755.80

PA 18 27030

Rifaximin - Impurity C

Rifamycin SV


  • Catalogue No.:PA 18 27030

  • CAS :

    6998-60-3

  • Molecular Formula : C37H47NO12

  • Molecular Weight : 697.77

PA 18 27040

Rifaximin - Impurity D

Rifaximin Y


  • Catalogue No.:PA 18 27040

  • CAS :

    NA

  • Molecular Formula : C43H49N3O12

  • Molecular Weight : 799.88

PA 18 27050

Rifaximin - Impurity E

Rifamycin S


  • Catalogue No.:PA 18 27050

  • CAS :

    13553-79-2

  • Molecular Formula : C37H45NO12

  • Molecular Weight : 695.25

PA 18 27060

Rifaximin - Impurity F

Rifamycin O


  • Catalogue No.:PA 18 27060

  • CAS :

    14487-05-9

  • Molecular Formula : C39H47NO14

  • Molecular Weight : 753.79

PA 18 27070

Rifaximin - Impurity G

6-O,14-Didehydro-Rifaximin


  • Catalogue No.:PA 18 27070

  • CAS :

    80621-76-7

  • Molecular Formula : C43H49N3O11

  • Molecular Weight : 783.86

PA 18 27080

Rifaximin - Impurity H

16-Desmethyl-16-(hydroxymethyl)rifaximin


  • Catalogue No.:PA 18 27080

  • CAS :

    1210022-90-4

  • Molecular Formula : C43H51N3O12

  • Molecular Weight : 801.90

PA 18 27510

Rifaximin Imine-N-Oxide

Rifaximin Imine-N-Oxide


  • Catalogue No.:PA 18 27510

  • CAS :

    51963-55-4

  • Molecular Formula : C43H58N4O13

  • Molecular Weight : 838.94

PA 18 27520

Desacetyl Rifaximin

Desacetyl Rifaximin


  • Catalogue No.:PA 18 27520

  • CAS :

    80621-88-1

  • Molecular Formula : C41H49N3O10

  • Molecular Weight : 743.84

PA 18 27530

(2S,16Z,18E,20S,21S,22R,23R,24R,25S,26R,27S,28E)-25-(Acetyloxy)-6,21,23-trihydroxy-27-methoxy-2,4,16,20,22,24,26-heptamethyl-11-methylene-2,7-(epoxypentadeca[1,11,13]trienimino)benzofuro[4,5-e]pyrido[1,2-α]benzimidazole-1,5,15(2H,11H)-trione

(2S,16Z,18E,20S,21S,22R,23R,24R,25S,26R,27S,28E)-25-(Acetyloxy)-6,21,23-trihydroxy-27-methoxy-2,4,16,20,22,24,26-heptamethyl-11-methylene-2,7-(epoxypentadeca[1,11,13]trienimino)benzofuro[4,5-e]pyrido[1,2-α]benzimidazole-1,5,15(2H,11H)-trione


  • Catalogue No.:PA 18 27530

  • CAS :

    1351775-04-6

  • Molecular Formula : C43H49N3O11

  • Molecular Weight : 783.86

PA 18 27540

(2S,16Z,18E,20S,21S,22R,23R,24R,25S,26R,27S,28E)-25-(Acetyloxy)-5,21,23-trihydroxy-27-methoxy-2,4,16,20,22,24,26-heptamethyl-11-methylene-2,7-(epoxypentadeca[1,11,13]trienimino)benzofuro[4,5-e]pyrido[1,2-α]benzimidazole-1,6,15(2H,11H)-trione

(2S,16Z,18E,20S,21S,22R,23R,24R,25S,26R,27S,28E)-25-(Acetyloxy)-5,21,23-trihydroxy-27-methoxy-2,4,16,20,22,24,26-heptamethyl-11-methylene-2,7-(epoxypentadeca[1,11,13]trienimino)benzofuro[4,5-e]pyrido[1,2-α]benzimidazole-1,6,15(2H,11H)-trione


  • Catalogue No.:PA 18 27540

  • CAS :

    1351775-03-5

  • Molecular Formula : C43H49N3O11

  • Molecular Weight : 783.86

PA STI 028600

11-Desmethyl Rifaximin-d4

11-Desmethyl Rifaximin-d4


  • Catalogue No.:PA STI 028600

  • CAS :

    1316302-12-1

  • Molecular Formula : C42H45D4N3O11

  • Molecular Weight : 775.88

PA STI 078040

Rifaximin-d6

Rifaximin-d6


  • Catalogue No.:PA STI 078040

  • CAS :

    1262992-43-7

  • Molecular Formula : C43H45D6N3O11

  • Molecular Weight : 791.92

PA EPR0900000

Rifamycin B (R0900000)

Rifamycin B (R0900000)


  • Catalogue No.:PA EPR0900000

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

PA EPR0950000

Rifamycin S (R0950000)

Rifamycin S (R0950000)


  • Catalogue No.:PA EPR0950000

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

PA EPY0001074

Rifaximin (Y0001074)

Rifaximin (Y0001074)


  • Catalogue No.:PA EPY0001074

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

PA EPY0001075

Rifaximin for system suitability (Y0001075)

Rifaximin for system suitability (Y0001075)


  • Catalogue No.:PA EPY0001075

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

PA 18 0271000

Rifamycin R

Rifamycin R


  • Catalogue No.:PA 18 0271000

  • CAS :

    59264-04-9

  • Molecular Formula : C37H45NO13

  • Molecular Weight : 711.76

PA 18 0271001

Rifaximin Impurity D and Rifaximin Impurity H Mixture

Rifaximin Impurity D and Rifaximin Impurity H Mixture


  • Catalogue No.:PA 18 0271001

  • CAS :

    NA

  • Molecular Formula : C43H49N3O12; C43H51N3O12

  • Molecular Weight : 799.88; 801.90

PA STI 089323

4-Methylpyridin-6-d-2-amine

4-Methylpyridin-6-d-2-amine


  • Catalogue No.:PA STI 089323

  • CAS :

    NA

  • Molecular Formula : C6H7DN2

  • Molecular Weight : 109.15

PA 18 0270031

Rifaximin - Impurity C (Sodium Salt)

Rifamycin SV Sodium Salt


  • Catalogue No.:PA 18 0270031

  • CAS :

    14897-39-3

  • Molecular Formula : C37H46NNaO12

  • Molecular Weight : 719.75

PA 18 0271002

25-Desacetyl Rifamycin-O

25-Desacetyl Rifamycin-O


  • Catalogue No.:PA 18 0271002

  • CAS :

    NA

  • Molecular Formula : C37H45NO13

  • Molecular Weight : 711.76

PA BSC 02718135

4-methylpyridin-2-amine (BSC)

4-methylpyridin-2-amine


  • Catalogue No.:PA BSC 02718135

  • CAS :

    695-34-1

  • Molecular Formula : C6H8N2

  • Molecular Weight : 108.14