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Pharmacopeial Impurities (EP / USP / BP)

Entecavir EP Impurity E

Reference StandardAvailable on request

Entecavir EP Impurity E (CAS 2349444-69-3) supplier Zemixal. Request a quote with price, lead time and documents. Catalogue no. ZX-021568.

Pack sizes
Entecavir EP Impurity E chemical structure
CAS number2349444-69-3
FormulaC13H17N5O4
Molar mass307.31 g/mol
Physical formSolid
HS code38229090
InChIKeySTXDLYSFRKKGPP-FXQIFTODSA-N
IUPAC name2-amino-9-[(1S,3R,4S)-4-hydroxy-3-(hydroxymethyl)-2-methylidenecyclopentyl]-8-methoxy-1H-purin-6-one

About Entecavir EP Impurity E

Entecavir EP Impurity E belongs to the Entecavir reference-standard family in the Zemixal catalogue. Key data (Reference Standard): CAS 2349444-69-3, formula C13H17N5O4 and molar mass 307.31 g/mol. It is handled as a solid.

Where it is used

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

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

Reference standards for Entecavir

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

Entecavir 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 Entecavir EP Impurity E
Product nameEntecavir EP Impurity E
Catalogue numberZX-021568
CAS number2349444-69-3
IUPAC name2-amino-9-[(1S,3R,4S)-4-hydroxy-3-(hydroxymethyl)-2-methylidenecyclopentyl]-8-methoxy-1H-purin-6-one
Molecular formulaC13H17N5O4
Molar mass307.31 g/mol
Exact mass307.1281
GradeReference Standard
Physical formSolid
XLogP3-1
H-bond donors / acceptors4 / 6
Topological polar surface area135 Ų
HS code38229090
InChIKeySTXDLYSFRKKGPP-FXQIFTODSA-N
SMILESCOC1=NC2=C(N1[C@H]3C[C@@H]([C@H](C3=C)CO)O)N=C(NC2=O)N
PubChem CID137184360
Synonyms8-Methoxy Entecavir, Entecavir USP Impurity E, Entecavir Monohydrate - Impurity E, 8-Methoxy-9-((1S,3R,4S)-4-hydroxy-3-(hydroxymethyl)-2-methylenecyclopentyl)guanine, Entecavir Impurity K

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 Entecavir 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 Entecavir EP Impurity E

Which CAS number identifies Entecavir EP Impurity E?
Entecavir EP Impurity E is registered under CAS 2349444-69-3. You may also see it listed as 8-Methoxy Entecavir, Entecavir USP Impurity E, Entecavir Monohydrate - Impurity E. Our catalogue number for this item is ZX-021568.
What are the formula and molar mass of Entecavir EP Impurity E?
For Entecavir EP Impurity E, its formula is C13H17N5O4 and its molar mass is 307.31 g/mol. The systematic (IUPAC) name is 2-amino-9-[(1S,3R,4S)-4-hydroxy-3-(hydroxymethyl)-2-methylidenecyclopentyl]-8-methoxy-1H-purin-6-one. InChIKey STXDLYSFRKKGPP-FXQIFTODSA-N lets you match it in any structure database.
How is Entecavir EP Impurity E used in pharmaceutical QC?
Entecavir EP Impurity E is a characterised reference material linked to Entecavir. 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 Entecavir 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 Entecavir 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 Entecavir EP Impurity E to my country?
Yes. Entecavir 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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