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Pharmacopeial Impurities (EP / USP / BP)

Azelastine EP Impurity E

Reference StandardAvailable on request

Azelastine EP Impurity E (CAS 20526-97-0) supplier Zemixal. Request a quote with price, lead time and documents. Catalogue no. ZX-020746.

Pack sizes
Azelastine EP Impurity E chemical structure
CAS number20526-97-0
FormulaC15H9ClO2
Molar mass256.68 g/mol
Physical formSolid
HS code38229090
InChIKeyOHRFHJYUEWVXBD-UHFFFAOYSA-N
IUPAC name3-[(4-chlorophenyl)methylidene]-2-benzofuran-1-one

About Azelastine EP Impurity E

Azelastine EP Impurity E belongs to the Azelastine reference-standard family in the Zemixal catalogue. For your records (Reference Standard), the material is defined by CAS 20526-97-0, formula C15H9ClO2 and molar mass 256.68 g/mol. It is handled as a solid.

Typical applications

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

Available as 10 mg, 25 mg, 50 mg and 100 mg. Larger or split packs can be arranged. Each lot travels with 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 Azelastine

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

Azelastine standards

Typical uses

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

Applications

Grade guides

Specifications and identifiers

Specifications of Azelastine EP Impurity E
Product nameAzelastine EP Impurity E
Catalogue numberZX-020746
CAS number20526-97-0
IUPAC name3-[(4-chlorophenyl)methylidene]-2-benzofuran-1-one
Molecular formulaC15H9ClO2
Molar mass256.68 g/mol
Exact mass256.0291
GradeReference Standard
Physical formSolid
XLogP34.1
H-bond donors / acceptors0 / 2
Topological polar surface area26.3 Ų
HS code38229090
InChIKeyOHRFHJYUEWVXBD-UHFFFAOYSA-N
SMILESC1=CC=C2C(=C1)C(=CC3=CC=C(C=C3)Cl)OC2=O
PubChem CID89347
Synonyms3-(4-Chlorobenzal)phthalide, azelastine USP rc e, Azelastine - Impurity E, 3-(4-chlorobenzylidene)isobenzofuran-1(3H)-one, 3-((4-Chlorophenyl)methylene)phthalide, 1(3H)-Isobenzofuranone, 3-[(4-chlorophenyl)methylene]-, (E/Z)-3-(4-chlorobenzylidene)isobenzofuran-1(3H)-one, 3-[(4-chlorophenyl)methylene]isobenzofuran-1-one, 3-[(4-Chlorophenyl)methylidene]-2-benzofuran-1(3H)-one

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 Azelastine EP Impurity E
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 Azelastine EP Impurity E

Which CAS number identifies Azelastine EP Impurity E?
Azelastine EP Impurity E is registered under CAS 20526-97-0. You may also see it listed as 3-(4-Chlorobenzal)phthalide, azelastine USP rc e, Azelastine - Impurity E. Our catalogue number for this item is ZX-020746.
What are the formula and molar mass of Azelastine EP Impurity E?
For Azelastine EP Impurity E, its formula is C15H9ClO2 and its molar mass is 256.68 g/mol. The systematic (IUPAC) name is 3-[(4-chlorophenyl)methylidene]-2-benzofuran-1-one. InChIKey OHRFHJYUEWVXBD-UHFFFAOYSA-N lets you match it in any structure database.
How is Azelastine EP Impurity E used in pharmaceutical QC?
Azelastine EP Impurity E is a characterised reference material linked to Azelastine. 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 Azelastine EP Impurity E?
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 Azelastine EP Impurity E?
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 Azelastine EP Impurity E to my country?
Yes. Azelastine EP Impurity E ships worldwide by express courier, air cargo or sea freight, quoted on the Incoterm you prefer, with full export documents.

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