(E)-4-oxidanylidene-4-[[2,4,5-tris(chloranyl)phenyl]amino]but-2-enoic acid (E)-4-oxo-4-(2,4,5-trichloroanilino)-2-butenoic acid 31680-08-7 A820953 CAS 31680-08-7

Purity 97%+In StockPharmaceutical Standards
CAS No.31680-08-7
Molecular FormulaC8H13NO4
Molecular Weight187.19 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

(E)-4-oxidanylidene-4-[[2,4,5-tris(chloranyl)phenyl]amino]but-2-enoic acid (E)-4-oxo-4-(2,4,5-trichloroanilino)-2-butenoic acid 31680-08-7 A820953 CAS 31680-08-7 chemical structure

Description

(E)-4-oxidanylidene-4-[[2,4,5-tris(chloranyl)phenyl]amino]but-2-enoic acid (E)-4-oxo-4-(2,4,5-trichloroanilino)-2-butenoic acid 31680-08-7 A820953 (C8H13NO4) 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 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).

CATO supplies (E)-4-oxidanylidene-4-[[2,4,5-tris(chloranyl)phenyl]amino]but-2-enoic acid (E)-4-oxo-4-(2,4,5-trichloroanilino)-2-butenoic acid 31680-08-7 A820953 (CAS 31680-08-7), a certified reference material (molecular formula C8H13NO4, MW 187.19 g/mol) for analytical method development and quality control.

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 FormulaC8H13NO4
Molecular Weight187.19 g/mol
AppearanceWhite 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)3.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1966
Nitrogen Atoms1

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