Rifaximin Impurity 2

Name: Rifaximin Impurity 2
Brand: Zemixal
SKU: ZX-026723

Reference StandardAvailable on request

Order Rifaximin Impurity 2 (CAS 1351775-03-5) online at Zemixal: C43H49N3O11, COA and SDS with every lot, worldwide shipping.

Pack sizes

CAS number1351775-03-5

FormulaC₄₃H₄₉N₃O₁₁

Molar mass783.9 g/mol

Physical formSolid

HS code38229090

InChIKeyAKJHOMQWQPCXMR-GEOWOUTJSA-N

About Rifaximin Impurity 2

Rifaximin Impurity 2 belongs to the Rifaximin reference-standard family in the Zemixal catalogue. For your records (Reference Standard), the material is defined by CAS 1351775-03-5, formula C43H49N3O11 and molar mass 783.9 g/mol. It is handled as a solid.

Use cases we see most often

Analytical method development
Method validation (AMV)
QC release testing
ANDA / DMF filings

Standard pack sizes are 10 mg, 25 mg, 50 mg and 100 mg, and custom quantities are quoted on request. Every shipment includes a certificate of analysis with characterisation data. Send an enquiry through the quote panel and you get a formal offer with Incoterms and delivery time.

Reference standards for Rifaximin

See every impurity, metabolite and related compound we list for this API.

Rifaximin standards

Typical uses

Analytical method development
Method validation (AMV)
QC release testing
ANDA / DMF filings

Applications

Pharmaceutical Manufacturing and QC Research Labs and Universities

Specifications and identifiers

Specifications of Rifaximin Impurity 2
Product name	Rifaximin Impurity 2
Catalogue number	ZX-026723
CAS number	1351775-03-5
IUPAC name	[(7S,9E,11S,12R,13S,14R,15R,16R,17S,18S,19E,21Z)-15,17,36-trihydroxy-11-methoxy-3,7,12,14,16,18,22-heptamethyl-30-methylidene-2,6,23-trioxo-8,37-dioxa-24,27,33-triazahexacyclo[23.10.1.14,7.05,35.026,34.027,32]heptatriaconta-1(36),3,5(35),9,19,21,24,26(34),28,31-decaen-13-yl] acetate
Molecular formula	C₄₃H₄₉N₃O₁₁
Molar mass	783.9 g/mol
Exact mass	783.3367
Grade	Reference Standard
Physical form	Solid
XLogP3	5.1
H-bond donors / acceptors	4 / 13
Topological polar surface area	194 Å²
HS code	38229090
InChIKey	AKJHOMQWQPCXMR-GEOWOUTJSA-N
SMILES	C[C@H]1/C=C/C=C(\C(=O)N=C2C3=C(C4=C5C(=C(C(=O)C4=C2O)C)O[C@@](C5=O)(O/C=C/[C@@H]([C@H]([C@H]([C@@H]([C@@H]([C@@H]([C@H]1O)C)O)C)OC(=O)C)C)OC)C)NC6=CC(=C)C=CN63)/C
PubChem CID	177857543
Synonyms	Rifaximin Impurity 1

Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.

Safety and GHS hazards

No GHS classification is on file for this item. Handle it as an unknown laboratory chemical and request the SDS with your quotation.

Pack sizes

Pack sizes of Rifaximin Impurity 2
10 mg	Quoted on request
25 mg	Quoted on request
50 mg	Quoted on request
100 mg	Quoted on request

Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.

Questions about Rifaximin Impurity 2

Which CAS number identifies Rifaximin Impurity 2?

Rifaximin Impurity 2 is registered under CAS 1351775-03-5. You may also see it listed as Rifaximin Impurity 1. Our catalogue number for this item is ZX-026723.

What are the formula and molar mass of Rifaximin Impurity 2?

For Rifaximin Impurity 2, its formula is C43H49N3O11 and its molar mass is 783.9 g/mol. InChIKey AKJHOMQWQPCXMR-GEOWOUTJSA-N lets you match it in any structure database.

How is Rifaximin Impurity 2 used in pharmaceutical QC?

Rifaximin Impurity 2 is a characterised reference material linked to Rifaximin. Laboratories use it to identify and quantify this impurity during method development and validation, stability work, batch release testing and regulatory submissions.

What grade and pack sizes are available for Rifaximin Impurity 2?

This listing is Reference Standard grade. Standard packs are 10 mg, 25 mg, 50 mg, 100 mg. Larger quantities and custom packing can be quoted on request.

Which documents come with Rifaximin Impurity 2?

Each lot ships with a batch certificate of analysis and a 16-section GHS safety data sheet. A typical COA or specification sheet can be shared with the quotation before you order.

Can Zemixal ship Rifaximin Impurity 2 to my country?

Yes. Rifaximin Impurity 2 ships worldwide by express courier, air cargo or sea freight, quoted on the Incoterm you prefer, with full export documents.

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