Methyl 7,9-dichloro-4-oxo-4h-pyrido[1,2-a]pyrimidine-2-carboxylate CAS 2007920-66-1

Purity 97%+In StockPharmaceutical Standards
CAS No.2007920-66-1
Molecular FormulaC10H6Cl2N2O3
Molecular Weight273.07 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Methyl 7,9-dichloro-4-oxo-4h-pyrido[1,2-a]pyrimidine-2-carboxylate CAS 2007920-66-1 chemical structure

Description

Methyl 7,9-dichloro-4-oxo-4h-pyrido[1,2-a]pyrimidine-2-carboxylate (CAS 2007920-66-1) is a high-purity analytical reference standard with the molecular formula C10H6Cl2N2O3 and a molecular weight of 273.07 g/mol.

Structurally, Methyl 7,9-dichloro-4-oxo-4h-pyrido[1,2-a]pyrimidine-2-carboxylate (C10H6Cl2N2O3) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 273.07 g/mol, it falls into the medium-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

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 Methyl 7,9-dichloro-4-oxo-4h-pyrido[1,2-a]pyrimidine-2-carboxylate 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 FormulaC10H6Cl2N2O3
Molecular Weight273.07 g/mol
AppearancePale yellow to yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility)
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in methanol, ethanol, DMSO
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)8.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1996
Halogen ContentCl-containing
Nitrogen Atoms2

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