2,4-dichloro-6-methylthieno[2,3-d]pyrimidine CAS 76872-23-6

Purity 97%+In StockPharmaceutical Standards
CAS No.76872-23-6
Molecular FormulaC7H12Cl2N2S
Molecular Weight227.15 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

2,4-dichloro-6-methylthieno[2,3-d]pyrimidine CAS 76872-23-6 chemical structure

Description

The molecular framework of 2,4-dichloro-6-methylthieno[2,3-d]pyrimidine (C7H12Cl2N2S) is characterized by a nitrile group, sulfur-containing functionality, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

2,4-dichloro-6-methylthieno[2,3-d]pyrimidine (CAS 76872-23-6), molecular formula C7H12Cl2N2S and molecular weight 227.15 g/mol, is a CATO reference standard with documented purity and traceability.

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 FormulaC7H12Cl2N2S
Molecular Weight227.15 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)2.0
CAS Registry Year (est.)1978
Halogen ContentCl-containing
Nitrogen Atoms2
Sulfur Atoms1

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