26379-96-4 Ethyl 1~4~,3~4~-dichloro-2~5~-oxo-2~2~,2~3~,2~4~,2~5~-tetrahydro[1~1~,2~1~:2~3~,3~1~-terphenyl]-2~4~-carboxylate DTXSID40376897 CAS 26379-96-4

Purity 97%+In StockPharmaceutical Standards
CAS No.26379-96-4
Molecular FormulaC21H18Cl2O3
Molecular Weight389.27 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

26379-96-4 Ethyl 1~4~,3~4~-dichloro-2~5~-oxo-2~2~,2~3~,2~4~,2~5~-tetrahydro[1~1~,2~1~:2~3~,3~1~-terphenyl]-2~4~-carboxylate DTXSID40376897 CAS 26379-96-4 chemical structure

Description

The occurrence of 26379-96-4 Ethyl 1~4~,3~4~-dichloro-2~5~-oxo-2~2~,2~3~,2~4~,2~5~-tetrahydro[1~1~,2~1~:2~3~,3~1~-terphenyl]-2~4~-carboxylate DTXSID40376897 is closely related to a steroid core, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

26379-96-4 Ethyl 1~4~,3~4~-dichloro-2~5~-oxo-2~2~,2~3~,2~4~,2~5~-tetrahydro[1~1~,2~1~:2~3~,3~1~-terphenyl]-2~4~-carboxylate DTXSID40376897 (CAS 26379-96-4) is a high-purity analytical reference standard with the molecular formula C21H18Cl2O3 and a molecular weight of 389.27 g/mol.

26379-96-4 Ethyl 1~4~,3~4~-dichloro-2~5~-oxo-2~2~,2~3~,2~4~,2~5~-tetrahydro[1~1~,2~1~:2~3~,3~1~-terphenyl]-2~4~-carboxylate DTXSID40376897 (C21H18Cl2O3) contains a steroid core, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

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

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 FormulaC21H18Cl2O3
Molecular Weight389.27 g/mol
AppearancePale yellow to yellow crystalline powder. (slight halide-like odor, low volatility)
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; 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.)1964
Halogen ContentCl-containing

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