1-(tert-Butoxycarbonyl)-1H-pyrazole-4-carboxylic acid CAS 288083-62-5

Purity 97%+In StockPharmaceutical Standards
CAS No.288083-62-5
Molecular FormulaC9H12N2O4
Molecular Weight212.20 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

1-(tert-Butoxycarbonyl)-1H-pyrazole-4-carboxylic acid CAS 288083-62-5 chemical structure

Description

The occurrence of 1-(tert-Butoxycarbonyl)-1H-pyrazole-4-carboxylic acid is closely related to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

1-(tert-Butoxycarbonyl)-1H-pyrazole-4-carboxylic acid (CAS 288083-62-5), molecular formula C9H12N2O4 and molecular weight 212.20 g/mol, is a CATO reference standard with documented purity and traceability.

1-(tert-Butoxycarbonyl)-1H-pyrazole-4-carboxylic acid (C9H12N2O4) 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 1-(tert-Butoxycarbonyl)-1H-pyrazole-4-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 FormulaC9H12N2O4
Molecular Weight212.20 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
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)5.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2025
Nitrogen Atoms2

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