4-Chloro-5-(4-ethoxyphenyl)-2,6-dimethylthieno[2,3-d]pyrimidine CAS 1018575-91-1

Purity 97%+In StockPharmaceutical Standards
CAS No.1018575-91-1
Molecular FormulaC16H15ClN2OS
Molecular Weight318.82 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

4-Chloro-5-(4-ethoxyphenyl)-2,6-dimethylthieno[2,3-d]pyrimidine CAS 1018575-91-1 chemical structure

Description

CATO supplies 4-Chloro-5-(4-ethoxyphenyl)-2,6-dimethylthieno[2,3-d]pyrimidine (CAS 1018575-91-1), a certified reference material (molecular formula C16H15ClN2OS, MW 318.82 g/mol) for analytical method development and quality control.

Based on its molecular formula C16H15ClN2OS, 4-Chloro-5-(4-ethoxyphenyl)-2,6-dimethylthieno[2,3-d]pyrimidine contains a nitrogen-containing heterocyclic scaffold, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 318.82 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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.

As a certified reference material (CRM), 4-Chloro-5-(4-ethoxyphenyl)-2,6-dimethylthieno[2,3-d]pyrimidine meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Physical & Chemical Properties

Molecular FormulaC16H15ClN2OS
Molecular Weight318.82 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)10.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1988
Halogen ContentCl-containing
Nitrogen Atoms2
Sulfur Atoms1

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