2,4-dichloro-5,6-dimethyl-thieno[2,3-d]pyrimidine CAS 42518-42-3

Purity 97%+In StockPharmaceutical Standards
CAS No.42518-42-3
Molecular FormulaC8H14Cl2N2S
Molecular Weight241.18 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

2,4-dichloro-5,6-dimethyl-thieno[2,3-d]pyrimidine CAS 42518-42-3 chemical structure

Description

Structurally, 2,4-dichloro-5,6-dimethyl-thieno[2,3-d]pyrimidine (C8H14Cl2N2S) contains a nitrile group, sulfur-containing functionality, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 2.0, corresponding to approximately 2 ring(s) or double-bond equivalent(s). With a molecular weight of 241.18 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

2,4-dichloro-5,6-dimethyl-thieno[2,3-d]pyrimidine (CAS 42518-42-3) is a high-purity analytical reference standard with the molecular formula C8H14Cl2N2S and a molecular weight of 241.18 g/mol.

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

As a certified reference material (CRM), 2,4-dichloro-5,6-dimethyl-thieno[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 FormulaC8H14Cl2N2S
Molecular Weight241.18 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.)1969
Halogen ContentCl-containing
Nitrogen Atoms2
Sulfur Atoms1

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