4,5-Dichloro-2-nitrobenzoic acid CAS 2011-09-8

Purity 97%+In StockPharmaceutical Standards
CAS No.2011-09-8
Molecular FormulaC7H3Cl2NO4
Molecular Weight236.01 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

4,5-Dichloro-2-nitrobenzoic acid CAS 2011-09-8 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 236.01 g/mol gives 4,5-Dichloro-2-nitrobenzoic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies 4,5-Dichloro-2-nitrobenzoic acid (CAS 2011-09-8), a certified reference material (molecular formula C7H3Cl2NO4, MW 236.01 g/mol) for analytical method development and quality control.

The molecular framework of 4,5-Dichloro-2-nitrobenzoic acid (C7H3Cl2NO4) is characterized by an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

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

As a certified reference material (CRM), 4,5-Dichloro-2-nitrobenzoic acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Physical & Chemical Properties

Molecular FormulaC7H3Cl2NO4
Molecular Weight236.01 g/mol
AppearanceOff-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility)
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)6.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1957
Halogen ContentCl-containing
Nitrogen Atoms1

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