Duloxetine Impurity 47 CAS 22176-00-7

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.22176-00-7
Molecular FormulaC8H8O2S
Molecular Weight168.21 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Duloxetine Impurity 47 CAS 22176-00-7 chemical structure

Description

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.

Duloxetine Impurity 47 (CAS 22176-00-7) is a certified pharmaceutical impurity reference standard with the molecular formula C8H8O2S and a molecular weight of 168.21 g/mol.

Structurally, Duloxetine Impurity 47 (C8H8O2S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 168.21 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

Physical & Chemical Properties

Molecular FormulaC8H8O2S
Molecular Weight168.21 g/mol
Purity97%+
StorageStore at 2-8°C
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityMay oxidize slowly on prolonged air exposure
Degree of Unsaturation (DBE)5.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1963
Sulfur Atoms1

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