4-Chloro-5,8-dihydro-6H-pyrano[4',3':4,5]thieno[2,3-d]pyrimidine CAS 243968-08-3

Description

As a certified reference material (CRM), 4-Chloro-5,8-dihydro-6H-pyrano[4',3':4,5]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.

4-Chloro-5,8-dihydro-6H-pyrano[4',3':4,5]thieno[2,3-d]pyrimidine (CAS 243968-08-3) is a high-purity analytical reference standard with the molecular formula C9H7ClN2OS and a molecular weight of 226.68 g/mol.

4-Chloro-5,8-dihydro-6H-pyrano[4',3':4,5]thieno[2,3-d]pyrimidine (C9H7ClN2OS) contains a nitrogen-containing heterocyclic scaffold, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point; 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.

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.

Physical & Chemical Properties

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