5-Fluoro-2-thioxo-2,3-dihydropyrimidin-4(1H)-one CAS 1542-23-0

Purity 97%+In StockPharmaceutical Standards
CAS No.1542-23-0
Molecular FormulaC4H3FN2OS
Molecular Weight146.14 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

5-Fluoro-2-thioxo-2,3-dihydropyrimidin-4(1H)-one CAS 1542-23-0 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 146.14 g/mol gives 5-Fluoro-2-thioxo-2,3-dihydropyrimidin-4(1H)-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

5-Fluoro-2-thioxo-2,3-dihydropyrimidin-4(1H)-one (CAS 1542-23-0), molecular formula C4H3FN2OS and molecular weight 146.14 g/mol, is a CATO reference standard with documented purity and traceability.

Owing to an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, fluorine substitution, 5-Fluoro-2-thioxo-2,3-dihydropyrimidin-4(1H)-one is typically off-white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 146.14 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 5-Fluoro-2-thioxo-2,3-dihydropyrimidin-4(1H)-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

Molecular FormulaC4H3FN2OS
Molecular Weight146.14 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)4.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1957
Halogen ContentF-containing
Nitrogen Atoms2
Sulfur Atoms1

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