5-Chloro-6-methylpyrimidine-2,4(1H,3H)-dione CAS 16018-87-4

Purity 97%+In StockPharmaceutical Standards
CAS No.16018-87-4
Molecular FormulaC5H5ClN2O2
Molecular Weight160.56 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

5-Chloro-6-methylpyrimidine-2,4(1H,3H)-dione CAS 16018-87-4 chemical structure

Description

As a certified reference material (CRM), 5-Chloro-6-methylpyrimidine-2,4(1H,3H)-dione 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.

CATO supplies 5-Chloro-6-methylpyrimidine-2,4(1H,3H)-dione (CAS 16018-87-4), a certified reference material (molecular formula C5H5ClN2O2, MW 160.56 g/mol) for analytical method development and quality control.

Structurally, 5-Chloro-6-methylpyrimidine-2,4(1H,3H)-dione (C5H5ClN2O2) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 160.56 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.

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

Molecular FormulaC5H5ClN2O2
Molecular Weight160.56 g/mol
AppearanceOff-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor)
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry, 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; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)4.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1961
Halogen ContentCl-containing
Nitrogen Atoms2

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