ChemicalSuppliers.com

Rifaximin suppliers and prices

Formula
C43H51N3O11
CAS number
80621-81-4
Molar mass
785.90 g/mol

Cheapest by weight

$147 per gram

5 grams for $735.00

At LKT Laboratories, Inc. , United States · Grade not stated

View at LKT Laboratories, Inc.

Lowest total price

$124.00 for 100 milligrams

Works out at $1,240 per gram

At Achemtek, United States

View at Achemtek

Every price we found

3 prices from 2 stores, checked October 30, 2026. In stock from $147 to $1,240 per gram, depending on pack size and store. Each one is worked out per kilogram, so a small bottle and a big bag compare fairly.

PackStoreGrade and formPrice per unitLink
5 grams$735.00 LKT Laboratories, Inc. United States Lowest priceGrade not stated $147 per gram
1 gram$170.00 LKT Laboratories, Inc. United States Grade not stated $170 per gram
100 milligrams$124.00 AchemtekUnited States Grade not stated $1,240 per gram
Cite these pricesA ready sentence and reference for your report

For your report

As of October 30, 2026, the lowest store price for rifaximin was $147 per gram: 5 grams for $735.00 at LKT Laboratories, Inc. .

Reference

APA, 7th edition

ChemicalSuppliers.com. (2026, October 30). Rifaximin suppliers and prices. Retrieved October 31, 2026, from https://www.chemicalsuppliers.com/rifaximin/

ACS

Rifaximin Suppliers and Prices. ChemicalSuppliers.com, October 30, 2026. https://www.chemicalsuppliers.com/rifaximin/ (accessed 2026-10-31).

BibTeX

@misc{chemicalsuppliers-rifaximin,
  author  = {{ChemicalSuppliers.com}},
  title   = {{Rifaximin} suppliers and prices},
  year    = {2026},
  date    = {2026-10-30},
  url     = {https://www.chemicalsuppliers.com/rifaximin/},
  urldate = {2026-10-31},
  note    = {Prices checked October 30, 2026}
}

Prices change every day, so each line carries the date they were checked.

Making a solution?

Pick the strength and how much you need. We work out the grams of Rifaximin and what they cost at the cheapest store we track.
You need
786 milligrams
of Rifaximin, molar mass 785.90 g/mol
That much costs
$115.53
$1,155 per litre of solution, at the lowest price per gram we found
Cheapest way to buy it
$170.00
1 pack of 1 gram at LKT Laboratories, Inc.
View at LKT Laboratories, Inc.

Weigh it out, dissolve it in less water than you need, then top up to the full amount.

Bulk suppliers

30 companies list it on PubChem or their own site. Ask any of them for a quote.

Your company? List it free and get bulk buyer requests.

Similar chemicals

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Chemical identity

Formula, molar mass, CAS number, InChIKey and the official PubChem record
Formula
C43H51N3O11
Molar mass
785.90 g/mol
CAS number
80621-81-4
InChIKey
NZCRJKRKKOLAOJ-XRCRFVBUSA-N
Official record
PubChem 6436173

How we compare: each store's own price, turned into US dollars at European Central Bank rates of 2026-10-30, then divided by the pack size. Shipping and tax are not included.