4-hydroxy-2-(pyridazin-3-yl)pyrimidine-5-carboxylic acid CAS 1187992-93-3

Purity 97%+In StockPharmaceutical Standards
CAS No.1187992-93-3
Molecular FormulaC9H6N4O3
Molecular Weight218.17 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

4-hydroxy-2-(pyridazin-3-yl)pyrimidine-5-carboxylic acid CAS 1187992-93-3 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 218.17 g/mol gives 4-hydroxy-2-(pyridazin-3-yl)pyrimidine-5-carboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

4-hydroxy-2-(pyridazin-3-yl)pyrimidine-5-carboxylic acid (CAS 1187992-93-3), molecular formula C9H6N4O3 and molecular weight 218.17 g/mol, is a CATO reference standard with documented purity and traceability.

4-hydroxy-2-(pyridazin-3-yl)pyrimidine-5-carboxylic acid (C9H6N4O3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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 4-hydroxy-2-(pyridazin-3-yl)pyrimidine-5-carboxylic acid 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 FormulaC9H6N4O3
Molecular Weight218.17 g/mol
AppearancePale yellow to 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
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)9.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1989
Nitrogen Atoms4

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