Adenosine Impurity 19 CAS 166735-83-7

Purity ≥95%In StockPharmacopoeial Impurity Standards
CAS No.166735-83-7
Molecular FormulaC11H13BrN2O5
Molecular Weight333.14 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Adenosine Impurity 19 CAS 166735-83-7 chemical structure

Description

The occurrence of Adenosine Impurity 19 is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, bromine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

CATO supplies Adenosine Impurity 19 (CAS 166735-83-7), a pharmacopoeial impurity reference standard (molecular formula C11H13BrN2O5, MW 333.14 g/mol) used for the identification and quantification of trace impurities in APIs.

Based on its molecular formula C11H13BrN2O5, Adenosine Impurity 19 contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 333.14 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.

CATO manufactures Adenosine Impurity 19 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 FormulaC11H13BrN2O5
Molecular Weight333.14 g/mol
AppearanceOff-white to pale yellow crystalline powder. (slight halide-like odor)
Purity≥95%
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)6.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2004
Halogen ContentBr-containing
Nitrogen Atoms2

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