Entecavir EP Impurity E

Name: Entecavir EP Impurity E
Brand: Vaqora Chemicals
SKU: VQ-022539

About Entecavir EP Impurity E

Vaqora Chemicals supplies Entecavir EP Impurity E, a pharmacopeial impurity of Entecavir registered under CAS number 2349444-69-3. The compound has the formula C13H17N5O4, corresponding to a molecular weight of 307.31 g/mol. Its systematic (IUPAC) name is 2-amino-9-[(1S,3R,4S)-4-hydroxy-3-(hydroxymethyl)-2-methylidenecyclopentyl]-8-methoxy-1H-purin-6-one. It is also known as 8-Methoxy Entecavir or Entecavir USP Impurity E.

The product is provided as a solid. Keep the vial tightly closed, protected from light and humidity, at the temperature stated on the Certificate of Analysis. Good laboratory practice and suitable PPE are recommended during handling.

Pharmaceutical QC and development laboratories use this impurity standard of Entecavir to develop and validate HPLC methods, to set specification limits and to document impurity profiles in ANDA and DMF submissions. Typical end-use sectors are pharmaceutical manufacturing and academic and industrial research.

Available in 10 mg, 25 mg, 50 mg and 100 mg packs, Entecavir EP Impurity E is dispatched with a Certificate of Analysis (COA) to destinations worldwide.

Typical applications

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

Industries

Related to Entecavir

View every impurity, metabolite and intermediate we list for Entecavir.

Entecavir impurities

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Entecavir EP Impurity E
Catalogue No.	VQ-022539
CAS Number	2349444-69-3
IUPAC name	2-amino-9-[(1S,3R,4S)-4-hydroxy-3-(hydroxymethyl)-2-methylidenecyclopentyl]-8-methoxy-1H-purin-6-one
Molecular formula	C₁₃H₁₇N₅O₄
Molecular weight	307.31 g/mol
Exact mass	307.1281
Grade	Reference Standard
HSN code	38229090
InChIKey	STXDLYSFRKKGPP-FXQIFTODSA-N
SMILES	COC1=NC2=C(N1[C@H]3C[C@@H]([C@H](C3=C)CO)O)N=C(NC2=O)N
PubChem CID	137184360

Physical properties
Physical form	Solid
LogP (XLogP3)	-1
H-bond donors / acceptors	4 / 6
TPSA	135 Å²
Synonyms	8-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

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of Entecavir EP Impurity E?

The CAS Registry Number of Entecavir EP Impurity E is 2349444-69-3. It is also known as 8-Methoxy Entecavir, Entecavir USP Impurity E, Entecavir Monohydrate - Impurity E.

What is the molecular formula and molecular weight of Entecavir EP Impurity E?

Entecavir EP Impurity E has the molecular formula C13H17N5O4 and a molecular weight of 307.31 g/mol. Its IUPAC name is 2-amino-9-[(1S,3R,4S)-4-hydroxy-3-(hydroxymethyl)-2-methylidenecyclopentyl]-8-methoxy-1H-purin-6-one.

What is Entecavir EP Impurity E used for?

Entecavir EP Impurity E is supplied as a characterised reference material related to Entecavir. It is used for analytical method development and validation (AMV), impurity profiling, stability studies and quality control, and in ANDA/DMF regulatory filings.

Which grade and pack sizes of Entecavir EP Impurity E can I order?

We supply Entecavir EP Impurity E in Reference Standard grade, in 10 mg, 25 mg, 50 mg, 100 mg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Entecavir EP Impurity E?

Yes. Every lot of Entecavir EP Impurity E is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Entecavir EP Impurity E be shipped internationally?

Yes. We export Entecavir EP Impurity E worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.