5-Methyl-4-oxo-4,5-dihydroisoxazolo[5,4-d]pyrimidine-3-carboxylic acid CAS 1104927-34-5

Purity 97%+In StockPharmaceutical Standards
CAS No.1104927-34-5
Molecular FormulaC7H5N3O4
Molecular Weight195.13 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

5-Methyl-4-oxo-4,5-dihydroisoxazolo[5,4-d]pyrimidine-3-carboxylic acid CAS 1104927-34-5 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 195.13 g/mol gives 5-Methyl-4-oxo-4,5-dihydroisoxazolo[5,4-d]pyrimidine-3-carboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies 5-Methyl-4-oxo-4,5-dihydroisoxazolo[5,4-d]pyrimidine-3-carboxylic acid (CAS 1104927-34-5), a certified reference material (molecular formula C7H5N3O4, MW 195.13 g/mol) for analytical method development and quality control.

Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, 5-Methyl-4-oxo-4,5-dihydroisoxazolo[5,4-d]pyrimidine-3-carboxylic acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 195.13 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.

As a certified reference material (CRM), 5-Methyl-4-oxo-4,5-dihydroisoxazolo[5,4-d]pyrimidine-3-carboxylic acid 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.

Physical & Chemical Properties

Molecular FormulaC7H5N3O4
Molecular Weight195.13 g/mol
AppearanceOff-white to pale yellow crystalline powder. (faint amine-like odor)
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO, water
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)7.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1989
Nitrogen Atoms3

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