Ethyl N-[(2Z)-2-{[(3-chloro-4-{[5-(trifluoromethyl)pyridin-2-yl]oxy}phenyl)amino]methylidene}-3-oxobutanoyl]carbamate CAS 338770-16-4

Purity 97%+In StockPharmaceutical Standards
CAS No.338770-16-4
Molecular FormulaC20H17ClF3N3O5
Molecular Weight471.81 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Ethyl N-[(2Z)-2-{[(3-chloro-4-{[5-(trifluoromethyl)pyridin-2-yl]oxy}phenyl)amino]methylidene}-3-oxobutanoyl]carbamate CAS 338770-16-4 chemical structure

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Ethyl N-[(2Z)-2-{[(3-chloro-4-{[5-(trifluoromethyl)pyridin-2-yl]oxy}phenyl)amino]methylidene}-3-oxobutanoyl]carbamate.

Ethyl N-[(2Z)-2-{[(3-chloro-4-{[5-(trifluoromethyl)pyridin-2-yl]oxy}phenyl)amino]methylidene}-3-oxobutanoyl]carbamate (CAS 338770-16-4), molecular formula C20H17ClF3N3O5 and molecular weight 471.81 g/mol, is a CATO reference standard with documented purity and traceability.

Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution, Ethyl N-[(2Z)-2-{[(3-chloro-4-{[5-(trifluoromethyl)pyridin-2-yl]oxy}phenyl)amino]methylidene}-3-oxobutanoyl]carbamate is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 471.81 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).

This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.

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 FormulaC20H17ClF3N3O5
Molecular Weight471.81 g/mol
AppearancePale yellow to yellow crystalline powder. (slight halide-like odor, low volatility)
Purity97%+
StorageStore in a cool place (≤25°C), protect from light, keep sealed and dry
Solubility (reference)Soluble in DMSO, DMF, methanol
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)12.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2025
Halogen ContentF/Cl-containing
Nitrogen Atoms3

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