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ChemicalBook >> CAS DataBase List >> Rifaximin

Rifaximin

Rifaximin price.
  • $12 - $3717
  • Product name: Rifaximin
  • CAS: 80621-81-4
  • MF: C43H51N3O11
  • MW: 785.89
  • EINECS:617-130-4
  • MDL Number:MFCD00864973
  • 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;normix ;ole-1,15(2h)-dione,25-(acetyloxy)-5,6,21,23-tetrahydroxy-27-methoxy-2,4,11,16 ;rifamycinl105 ;rifamycinl105sv ;rifaxidin ;RIFAXIMIN;RIFACOL
81 prices
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Brand
  • aablocks
  • AHH
  • AK Scientific
  • ApexBio Technology
  • AvaChem
  • Biorbyt Ltd
  • Biosynth
  • Cayman Chemical
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  • ChemScene
  • Chemtos
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  • Sigma-Aldrich
  • TCI Chemical
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  • Usbiological
Package
  • 50g
  • y0001074
  • 2g
  • 10mg
  • 300mg
  • 10mM(in1mLDMSO)
  • y0001075
  • 50
  • 10 mg
  • 160 mg
  • 10mM(in 1mL DMSO)
  • 100mg
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  • 5g
  • 10g
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  • 1000g
  • Manufactureraablocks
  • Product numberAA00ILK0
  • Product description(2S,16Z,18E,20S,21S,22R,23R,24R,25S,26R,27S,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]pyrido[1,2-a]benzimidazole-1,15(2H)-dione ≥97%
  • Packaging250mg
  • Price$12
  • Updated2026-05-29
  • Buy
  • Manufactureraablocks
  • Product numberAA00ILK0
  • Product description(2S,16Z,18E,20S,21S,22R,23R,24R,25S,26R,27S,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]pyrido[1,2-a]benzimidazole-1,15(2H)-dione ≥97%
  • Packaging1g
  • Price$22
  • Updated2026-05-29
  • Buy
  • Manufactureraablocks
  • Product numberAA00ILK0
  • Product description(2S,16Z,18E,20S,21S,22R,23R,24R,25S,26R,27S,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]pyrido[1,2-a]benzimidazole-1,15(2H)-dione 98%
  • Packaging5g
  • Price$32
  • Updated2026-05-29
  • Buy
  • Manufactureraablocks
  • Product numberAA00ILK0
  • Product description(2S,16Z,18E,20S,21S,22R,23R,24R,25S,26R,27S,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]pyrido[1,2-a]benzimidazole-1,15(2H)-dione 98%
  • Packaging10g
  • Price$50
  • Updated2026-05-29
  • Buy
  • Manufactureraablocks
  • Product numberAA00ILK0
  • Product description(2S,16Z,18E,20S,21S,22R,23R,24R,25S,26R,27S,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]pyrido[1,2-a]benzimidazole-1,15(2H)-dione 98%
  • Packaging25g
  • Price$99
  • Updated2026-05-29
  • Buy
  • ManufacturerAHH
  • Product numberAPI-1006
  • Product descriptionRifaximin 97%
  • Packaging100g
  • Price$370
  • Updated2026-05-25
  • Buy
  • ManufacturerAHH
  • Product numberAPI-1006
  • Product descriptionRifaximin 97%
  • Packaging100g
  • Price$370
  • Updated2026-05-26
  • Buy
  • ManufacturerAHH
  • Product numberAPI-1006
  • Product descriptionRifaximin 97%
  • Packaging500g
  • Price$880
  • Updated2026-05-25
  • Buy
  • ManufacturerAHH
  • Product numberAPI-1006
  • Product descriptionRifaximin 97%
  • Packaging500g
  • Price$880
  • Updated2026-05-26
  • Buy
  • ManufacturerAHH
  • Product numberAPI-1006
  • Product descriptionRifaximin 98%
  • Packaging1000g
  • Price$1200
  • Updated2021-12-16
  • Buy
  • ManufacturerAHH
  • Product numberAPI-1006
  • Product descriptionRifaximin 97%
  • Packaging1000g
  • Price$1200
  • Updated2026-05-25
  • Buy
  • ManufacturerAHH
  • Product numberAPI-1006
  • Product descriptionRifaximin 97%
  • Packaging1000g
  • Price$1200
  • Updated2026-05-26
  • Buy
  • ManufacturerAK Scientific
  • Product numberJ10371
  • Product descriptionRifaximin 98%(HPLC),powder
  • Packaging5g
  • Price$646
  • Updated2026-06-04
  • Buy
  • ManufacturerAK Scientific
  • Product numberJ10371
  • Product descriptionRifaximin 98%(HPLC),powder
  • Packaging1g
  • Price$178
  • Updated2026-06-04
  • Buy
  • ManufacturerAK Scientific
  • Product numberH732
  • Product descriptionRifaximin
  • Packaging5g
  • Price$407
  • Updated2021-12-16
  • Buy
  • ManufacturerAK Scientific
  • Product numberJ53369
  • Product descriptionRifaximin 95%
  • Packaging5g
  • Price$420
  • Updated2026-06-04
  • Buy
Manufacturer Product number Product description Packaging Price Updated Buy
aablocks AA00ILK0 (2S,16Z,18E,20S,21S,22R,23R,24R,25S,26R,27S,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]pyrido[1,2-a]benzimidazole-1,15(2H)-dione ≥97% 250mg $12 2026-05-29 Buy
aablocks AA00ILK0 (2S,16Z,18E,20S,21S,22R,23R,24R,25S,26R,27S,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]pyrido[1,2-a]benzimidazole-1,15(2H)-dione ≥97% 1g $22 2026-05-29 Buy
aablocks AA00ILK0 (2S,16Z,18E,20S,21S,22R,23R,24R,25S,26R,27S,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]pyrido[1,2-a]benzimidazole-1,15(2H)-dione 98% 5g $32 2026-05-29 Buy
aablocks AA00ILK0 (2S,16Z,18E,20S,21S,22R,23R,24R,25S,26R,27S,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]pyrido[1,2-a]benzimidazole-1,15(2H)-dione 98% 10g $50 2026-05-29 Buy
aablocks AA00ILK0 (2S,16Z,18E,20S,21S,22R,23R,24R,25S,26R,27S,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]pyrido[1,2-a]benzimidazole-1,15(2H)-dione 98% 25g $99 2026-05-29 Buy
AHH API-1006 Rifaximin 97% 100g $370 2026-05-25 Buy
AHH API-1006 Rifaximin 97% 100g $370 2026-05-26 Buy
AHH API-1006 Rifaximin 97% 500g $880 2026-05-25 Buy
AHH API-1006 Rifaximin 97% 500g $880 2026-05-26 Buy
AHH API-1006 Rifaximin 98% 1000g $1200 2021-12-16 Buy
AHH API-1006 Rifaximin 97% 1000g $1200 2026-05-25 Buy
AHH API-1006 Rifaximin 97% 1000g $1200 2026-05-26 Buy
AK Scientific J10371 Rifaximin 98%(HPLC),powder 5g $646 2026-06-04 Buy
AK Scientific J10371 Rifaximin 98%(HPLC),powder 1g $178 2026-06-04 Buy
AK Scientific H732 Rifaximin 5g $407 2021-12-16 Buy
AK Scientific J53369 Rifaximin 95% 5g $420 2026-06-04 Buy

Properties

Melting point :200-2050C (dec)
Density :1.36±0.1 g/cm3(Predicted)
storage temp. :Sealed in dry,Store in freezer, under -20°C
solubility :ethanol: soluble1mg/mL
pka :2.83±0.70(Predicted)
form :powder
color :dark orange
Merck :14,8220
Stability :Hygroscopic
Major Application :forensics and toxicology
pharmaceutical (small molecule) InChIKey :NZCRJKRKKOLAOJ-XRCRFVBUSA-N
SMILES :CO[C@H]1\C=C\O[C@@]2(C)Oc3c(C)c(O)c4c(O)c(NC(=O)C(C)=C\C=C\[C@@H](C)[C@@H](O)[C@@H](C)[C@H](O)[C@H](C)[C@H]([C@H]1C)C(=O)OC)c5c(nc6cc(C)ccn56)c4c3C2=O

Safety Information

Symbol(GHS): Health Hazard (GHS08)
Signal word: Warning
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H312 Harmful in contact with skin Acute toxicity,dermal Category 4 Warning P280,P302+P352, P312, P322, P363,P501
H332 Harmful if inhaled Acute toxicity,inhalation Category 4 Warning P261, P271, P304+P340, P312
H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
H361 Suspected of damaging fertility or the unborn child Reproductive toxicity Category 2 Warning P201, P202, P281, P308+P313, P405,P501
Precautionary statements:
P201 Obtain special instructions before use.
P202 Do not handle until all safety precautions have been read and understood.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P271 Use only outdoors or in a well-ventilated area.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P281 Use personal protective equipment as required.
P302+P352 IF ON SKIN: wash with plenty of soap and water.
P304+P340 IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
P308+P313 IF exposed or concerned: Get medical advice/attention.
P312 Call a POISON CENTER or doctor/physician if you feel unwell.
P322 Specific measures (see …on this label).
P363 Wash contaminated clothing before reuse.
P405 Store locked up.
P501 Dispose of contents/container to..…

Description

Rifaximin is an antibiotic derived from rifamycin that targets most Gram-positive and Gram-negative bacteria. As it is poorly absorbed after oral administration, it is effective in eliminating bacteria in the gastrointestinal system, including those involved in intestinal inflammatory diseases.

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