Entecavir Impurity 44 CAS 39939-07-6

Purity 97%+In StockPharmaceutical Standards
CAS No.39939-07-6
Molecular FormulaC13H14O
Molecular Weight186.25 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Entecavir Impurity 44 CAS 39939-07-6 chemical structure

Description

Entecavir Impurity 44 (CAS 39939-07-6) is a high-purity analytical reference standard with the molecular formula C13H14O and a molecular weight of 186.25 g/mol.

Owing to a hydroxyl group, an ether linkage, an aromatic ring system, Entecavir Impurity 44 is typically off-white to pale yellow low-melting solid. Its solid-state physicochemical attributes — including a molecular weight of 186.25 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

CATO manufactures Entecavir Impurity 44 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.

Physical & Chemical Properties

Molecular FormulaC13H14O
Molecular Weight186.25 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)7.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1968

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