2,5-Dimethyl-1-(5-methyl-1,2-oxazol-3-yl)-1h-pyrrole-3-carboxylic acid CAS 855991-76-3

Purity 97%+In StockPharmaceutical Standards
CAS No.855991-76-3
Molecular FormulaC11H12N2O3
Molecular Weight220.22 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

2,5-Dimethyl-1-(5-methyl-1,2-oxazol-3-yl)-1h-pyrrole-3-carboxylic acid CAS 855991-76-3 chemical structure

Description

The occurrence of 2,5-Dimethyl-1-(5-methyl-1,2-oxazol-3-yl)-1h-pyrrole-3-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.

CATO supplies 2,5-Dimethyl-1-(5-methyl-1,2-oxazol-3-yl)-1h-pyrrole-3-carboxylic acid (CAS 855991-76-3), a certified reference material (molecular formula C11H12N2O3, MW 220.22 g/mol) for analytical method development and quality control.

The molecular framework of 2,5-Dimethyl-1-(5-methyl-1,2-oxazol-3-yl)-1h-pyrrole-3-carboxylic acid (C11H12N2O3) is characterized by an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

Physical & Chemical Properties

Molecular FormulaC11H12N2O3
Molecular Weight220.22 g/mol
AppearanceOff-white to pale yellow crystalline powder
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)7.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1987
Nitrogen Atoms2

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