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Clearsynth is a leading innovator in pharmaceutical reference standards, offering high-quality Reference Standards for Rifaximin, including both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope products, and nitrosamines (N-NO products). Our Rifaximin impurity reference standards are invaluable for pharmaceutical research, supporting product development, ANDA and DMF submissions, quality control (QC), method validation, and stability studies. They also aid in identifying unknown impurities and assessing genotoxic potential.
Our Rifaximin-related products undergo thorough characterization and are supplied with detailed Certificates of Analysis (COA) and analytical data that meet regulatory requirements. All supplied products are re-tested at regular intervals to ensure ongoing quality and compliance.

Rifaximin Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Rifaximin-d6 Stable Isotopes CS-O-06926 80621-81-4(Unlabeled) In Stock
11-Desmethyl Rifaximin D4 Stable Isotopes CS-T-52267 1316302-12-1 Enquire
25-Desacetyl Rifaximin-d6 Stable Isotopes CS-P-02778 Not Available Enquire
Rifaximin-d6 (Major) Stable Isotopes CS-T-85315 1262992-43-7 Enquire


API

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Rifaximin API CS-O-02226 80621-81-4 In Stock


Impurity

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
2-Amino-4-methylpyridine Impurity CS-M-56831 695-34-1 In Stock
Desacetyl Rifaximin Impurity CS-T-63098 80621-88-1 In Stock
Rifamycin sodium salt Impurity CS-T-61154 14897-39-3 In Stock
Rifaximin Alpha Isomer (26S) Impurity CS-O-52239 Not Available Enquire
Rifaximin degradation Impurity -1 Impurity CS-O-57230 ---- Enquire
Rifaximin EP Impurity D Impurity CS-O-14278 ---- In Stock
Rifaximin EP Impurity E Impurity CS-O-02278 13553-79-2 In Stock
Rifaximin EP Impurity H Impurity CS-EO-00887 1210022-90-4 In Stock
Rifaximin Impurity 5 Impurity CS-O-59614 ---- Enquire
(2S,16Z,18E,20S,21S,22R,23R,24R,25S,26R,27S,28E)-25-(Acetylo... Impurity CS-T-64265 1351775-03-5 Enquire
Dehydro Rifaximin Impurity CS-T-73193 80621-76-7 Enquire
Rifaximin EP Impurity B Impurity CS-T-41832 13929-35-6 Enquire
Rifaximin EP Impurity D and Rifaximin EP Impurity H Mixture Impurity CS-O-43082 Not Available Enquire
Rifaximin for system suitability CRS( Impurity H) Impurity CS-EG-03448 ---- Enquire
Rifaximin Impurity 1 Impurity CS-T-64040 1351775-04-6 Enquire
Rifaximin Impurity 3 Impurity CS-P-08747 1404064-82-9 Enquire