Chlorzoxazone-2-<SUP>13</SUP>C-3-<SUP>15</SUP>N-Hydroxy-<SUP>18</SUP>O CAS 1173023-63-6

Purity 97%+In StockPharmaceutical Standards
CAS No.1173023-63-6
Molecular FormulaC6[13C]H10Cl[15N]O[18O]
Molecular Weight179.60 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Chlorzoxazone-2-<SUP>13</SUP>C-3-<SUP>15</SUP>N-Hydroxy-<SUP>18</SUP>O CAS 1173023-63-6 chemical structure

Description

Chlorzoxazone-2-<SUP>13</SUP>C-3-<SUP>15</SUP>N-Hydroxy-<SUP>18</SUP>O (CAS 1173023-63-6) is a high-purity analytical reference standard with the molecular formula C6[13C]H10Cl[15N]O[18O] and a molecular weight of 179.60 g/mol.

The molecular framework of Chlorzoxazone-2-<SUP>13</SUP>C-3-<SUP>15</SUP>N-Hydroxy-<SUP>18</SUP>O (C6[13C]H10Cl[15N]O[18O]) is characterized by an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. 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. 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).

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 FormulaC6[13C]H10Cl[15N]O[18O]
Molecular Weight179.60 g/mol
AppearanceWhite to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor)
Purity97%+
StorageStore at 2-8°C, protect from light, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)3.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1989
Halogen ContentCl-containing
Nitrogen Atoms1

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