(E)-Maprotiline EP Impurity A CAS 38849-09-1

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.38849-09-1
Molecular FormulaC19H16O
Molecular Weight260.33 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

(E)-Maprotiline EP Impurity A CAS 38849-09-1 chemical structure

Description

(E)-Maprotiline EP Impurity A (CAS 38849-09-1) is a certified pharmaceutical impurity reference standard with the molecular formula C19H16O and a molecular weight of 260.33 g/mol.

Owing to a steroid core, a hydroxyl group, an ether linkage, (E)-Maprotiline EP Impurity A is typically pale yellow to yellow low-melting solid. Its solid-state physicochemical attributes — including a molecular weight of 260.33 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 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.

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 FormulaC19H16O
Molecular Weight260.33 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)12.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1968

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