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Pharmacopeial Impurities (EP / USP / BP)

Azithromycin EP Impurity B

Reference StandardAvailable on request

Azithromycin EP Impurity B (CAS 307974-61-4) supplier Zemixal: C38H72N2O11, COA and SDS with every lot, worldwide shipping.

Pack sizes
Azithromycin EP Impurity B chemical structure
CAS number307974-61-4
FormulaC38H72N2O11
Molar mass733 g/mol
Physical formSolid
HS code38229090
InChIKeyJBYIGHZCRVMHAK-VINPOOLWSA-N

About Azithromycin EP Impurity B

Azithromycin EP Impurity B is supplied by Zemixal as a characterised reference material for Azithromycin analysis. For your records (Reference Standard), the material is defined by CAS 307974-61-4, formula C38H72N2O11 and molar mass 733 g/mol. It is handled as a solid.

Common uses in the lab and plant

  • Pharmacopeial method verification
  • Impurity profiling
  • QC release testing
  • ANDA / DMF filings

Safe handling

Hazard communication follows GHS (Danger: H317 and H334). Our SDS lists exposure controls and first-aid measures.

Order it in 10 mg, 25 mg, 50 mg and 100 mg packs or ask for a bulk quotation. You receive a certificate of analysis with characterisation data with each order. Request pricing online and we confirm availability, documentation and freight to your country.

Reference standards for Azithromycin

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

Azithromycin standards

Typical uses

  • Pharmacopeial method verification
  • Impurity profiling
  • QC release testing
  • ANDA / DMF filings

Applications

Pharmaceutical Manufacturing and QCResearch Labs and Universities

Grade guides

Ph. Eur. Grade (European Pharmacopoeia)

Specifications and identifiers

Specifications of Azithromycin EP Impurity B
Product nameAzithromycin EP Impurity B
Catalogue numberZX-019929
CAS number307974-61-4
IUPAC name(2R,3R,4S,5R,8R,10R,11R,12S,13S,14R)-11-[(2S,3R,4S,6R)-4-(dimethylamino)-3-hydroxy-6-methyloxan-2-yl]oxy-2-ethyl-4,10-dihydroxy-13-[(2R,4R,5S,6S)-5-hydroxy-4-methoxy-4,6-dimethyloxan-2-yl]oxy-3,5,6,8,10,12,14-heptamethyl-1-oxa-6-azacyclopentadecan-15-one
Molecular formulaC38H72N2O11
Molar mass733 g/mol
Exact mass732.5136
GradeReference Standard
Physical formSolid
XLogP35.2
H-bond donors / acceptors4 / 13
Topological polar surface area160 Ų
HS code38229090
InChIKeyJBYIGHZCRVMHAK-VINPOOLWSA-N
SMILESCC[C@@H]1[C@@H]([C@@H]([C@H](N(C[C@@H](C[C@@]([C@@H]([C@H]([C@@H]([C@H](C(=O)O1)C)O[C@H]2C[C@@]([C@H]([C@@H](O2)C)O)(C)OC)C)O[C@H]3[C@@H]([C@H](C[C@H](O3)C)N(C)C)O)(C)O)C)C)C)O)C
PubChem CID71587690
SynonymsAzithromycin - Impurity B, Azithromycin B, Azithromycin Impurity B, Azithromycin Impurity 2, 3-deoxyazithromycin (azithromycin B)

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

Safety and GHS hazards

GHS07 Irritant or harmful
Irritant or harmful
GHS08 Health hazard
Health hazard

Signal word Danger

  • H317May cause an allergic skin reaction
  • H334May cause allergy or asthma symptoms or breathing difficulties if inhaled

Precautionary statements P233, P260, P261, P271, P272, P280, P284, P302 + P352, P304 + P340, P321, P333 + P317, P342 + P316, P362 + P364, P403, P501

Classification summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.

Pack sizes

Pack sizes of Azithromycin EP Impurity B
10 mgQuoted on request
25 mgQuoted on request
50 mgQuoted on request
100 mgQuoted on request

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

Questions about Azithromycin EP Impurity B

Which CAS number identifies Azithromycin EP Impurity B?
Azithromycin EP Impurity B is registered under CAS 307974-61-4. You may also see it listed as Azithromycin - Impurity B, Azithromycin B, Azithromycin Impurity B. Our catalogue number for this item is ZX-019929.
What are the formula and molar mass of Azithromycin EP Impurity B?
For Azithromycin EP Impurity B, its formula is C38H72N2O11 and its molar mass is 733 g/mol. InChIKey JBYIGHZCRVMHAK-VINPOOLWSA-N lets you match it in any structure database.
How is Azithromycin EP Impurity B used in pharmaceutical QC?
Azithromycin EP Impurity B is a characterised reference material linked to Azithromycin. 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 Azithromycin EP Impurity B?
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 Azithromycin EP Impurity B?
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 Azithromycin EP Impurity B to my country?
Yes. Because Azithromycin EP Impurity B is classed as hazardous, it travels in UN-approved packaging as dangerous goods under IATA or IMDG rules, with the export paperwork your broker needs.

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