4-(4-Chlorophenethoxy)pyrido[2,3-d]pyrimidine CAS 134999-57-8

Purity 97%+In StockPharmaceutical Standards
CAS No.134999-57-8
Molecular FormulaC20H28O4
Molecular Weight332.43 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

4-(4-Chlorophenethoxy)pyrido[2,3-d]pyrimidine CAS 134999-57-8 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 4-(4-Chlorophenethoxy)pyrido[2,3-d]pyrimidine.

4-(4-Chlorophenethoxy)pyrido[2,3-d]pyrimidine (CAS 134999-57-8) is a high-purity analytical reference standard with the molecular formula C20H28O4 and a molecular weight of 332.43 g/mol.

The molecular framework of 4-(4-Chlorophenethoxy)pyrido[2,3-d]pyrimidine (C20H28O4) is characterized by a flavonoid core, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.

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.

CATO manufactures 4-(4-Chlorophenethoxy)pyrido[2,3-d]pyrimidine 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 FormulaC20H28O4
Molecular Weight332.43 g/mol
AppearanceOff-white to pale yellow crystalline powder
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
Degree of Unsaturation (DBE)7.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1995

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