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Pharmacopeial Impurities (EP / USP / BP)

Entecavir EP Impurity F

Reference StandardAvailable on request

Buy Entecavir EP Impurity F (CAS 649761-24-0) from Zemixal: C27H31N5O2Si, COA and SDS with every lot, worldwide shipping.

Pack sizes
Entecavir EP Impurity F chemical structure
CAS number649761-24-0
FormulaC27H31N5O2Si
Molar mass485.7 g/mol
Physical formSolid
HS code38229090
InChIKeyLMLFXMXUWHGHSR-VABKMULXSA-N
IUPAC name2-amino-9-[(1S,3R,4S)-4-[dimethyl(phenyl)silyl]-2-methylidene-3-(phenylmethoxymethyl)cyclopentyl]-1H-purin-6-one

About Entecavir EP Impurity F

Zemixal lists Entecavir EP Impurity F for laboratories that identify, quantify or control Entecavir and its related substances. For your records (Reference Standard), the material is defined by CAS 649761-24-0, formula C27H31N5O2Si and molar mass 485.7 g/mol. It is handled as a solid.

Where it is used

  • Pharmacopeial method verification
  • Impurity profiling
  • 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. Each lot travels with 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 F
Product nameEntecavir EP Impurity F
Catalogue numberZX-021569
CAS number649761-24-0
IUPAC name2-amino-9-[(1S,3R,4S)-4-[dimethyl(phenyl)silyl]-2-methylidene-3-(phenylmethoxymethyl)cyclopentyl]-1H-purin-6-one
Molecular formulaC27H31N5O2Si
Molar mass485.7 g/mol
Exact mass485.2247
GradeReference Standard
Physical formSolid
H-bond donors / acceptors2 / 4
Topological polar surface area94.5 Ų
HS code38229090
InChIKeyLMLFXMXUWHGHSR-VABKMULXSA-N
SMILESC[Si](C)([C@H]1C[C@@H](C(=C)[C@@H]1COCC2=CC=CC=C2)N3C=NC4=C3N=C(NC4=O)N)C5=CC=CC=C5
PubChem CID136096441
SynonymsEntecavir USP Impurity A, Entecavir USP Impurity F, Entecavir Monohydrate - Impurity F, 6-O-Benzyl-4-dehydroxy-4-diMethylphenylsilyl Entecavir, 3-Benzyl-4-silyl entecavir, 9-((1S,3R,4S)-4-Dimethylphenylsilyl-3-(benzyloxymethyl)-2-methylenecyclopentyl)guanine

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 F
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 F

Which CAS number identifies Entecavir EP Impurity F?
Entecavir EP Impurity F is registered under CAS 649761-24-0. You may also see it listed as Entecavir USP Impurity A, Entecavir USP Impurity F, Entecavir Monohydrate - Impurity F. Our catalogue number for this item is ZX-021569.
What are the formula and molar mass of Entecavir EP Impurity F?
For Entecavir EP Impurity F, its formula is C27H31N5O2Si and its molar mass is 485.7 g/mol. The systematic (IUPAC) name is 2-amino-9-[(1S,3R,4S)-4-[dimethyl(phenyl)silyl]-2-methylidene-3-(phenylmethoxymethyl)cyclopentyl]-1H-purin-6-one. InChIKey LMLFXMXUWHGHSR-VABKMULXSA-N lets you match it in any structure database.
How is Entecavir EP Impurity F used in pharmaceutical QC?
Entecavir EP Impurity F 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 F?
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 F?
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 F to my country?
Yes. Entecavir EP Impurity F ships worldwide by express courier, air cargo or sea freight, quoted on the Incoterm you prefer, with full export documents.

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