4-Chloro-5-methoxy-2-nitroaniline CAS 55730-07-9

Purity 97%+In StockPharmaceutical Standards
CAS No.55730-07-9
Molecular FormulaC7H7ClN2O3
Molecular Weight202.60 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

4-Chloro-5-methoxy-2-nitroaniline CAS 55730-07-9 chemical structure

Description

The occurrence of 4-Chloro-5-methoxy-2-nitroaniline is closely related to an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

CATO supplies 4-Chloro-5-methoxy-2-nitroaniline (CAS 55730-07-9), a certified reference material (molecular formula C7H7ClN2O3, MW 202.60 g/mol) for analytical method development and quality control.

Based on its molecular formula C7H7ClN2O3, 4-Chloro-5-methoxy-2-nitroaniline contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 202.60 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.

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 FormulaC7H7ClN2O3
Molecular Weight202.60 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)5.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1972
Halogen ContentCl-containing
Nitrogen Atoms2

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