7-Chlorothieno[2,3-d]pyridazin-4(5H)-one CAS 19137-24-7

Description

Compared with other compounds in its class, the molecular weight of 186.62 g/mol gives 7-Chlorothieno[2,3-d]pyridazin-4(5H)-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

7-Chlorothieno[2,3-d]pyridazin-4(5H)-one (CAS 19137-24-7) is a high-purity analytical reference standard with the molecular formula C6H3ClN2OS and a molecular weight of 186.62 g/mol.

Owing to an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system, 7-Chlorothieno[2,3-d]pyridazin-4(5H)-one is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 186.62 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.

CATO manufactures 7-Chlorothieno[2,3-d]pyridazin-4(5H)-one 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

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