4-Chloro-2-(2-hydroxyethyl)-5-methoxypyridazin-3(2H)-one CAS 898261-83-1

Purity 97%+In StockPharmaceutical Standards
CAS No.898261-83-1
Molecular FormulaC7H9ClN2O3
Molecular Weight204.61 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

4-Chloro-2-(2-hydroxyethyl)-5-methoxypyridazin-3(2H)-one CAS 898261-83-1 chemical structure

Description

CATO manufactures 4-Chloro-2-(2-hydroxyethyl)-5-methoxypyridazin-3(2H)-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.

4-Chloro-2-(2-hydroxyethyl)-5-methoxypyridazin-3(2H)-one (CAS 898261-83-1), molecular formula C7H9ClN2O3 and molecular weight 204.61 g/mol, is a CATO reference standard with documented purity and traceability.

4-Chloro-2-(2-hydroxyethyl)-5-methoxypyridazin-3(2H)-one (C7H9ClN2O3) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. It is notably hygroscopic, halogen substitution raises its density and boiling point, 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.

Physical & Chemical Properties

Molecular FormulaC7H9ClN2O3
Molecular Weight204.61 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 methanol, ethanol, DMSO, water
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
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1987
Halogen ContentCl-containing
Nitrogen Atoms2

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