2280-89-9 A3PN1N22K1 5-Amino-2,4,6-triiodo-N-methylisophthalamic acid 3-Amino-2,4,6-triiodo-5-((methylamino)carbonyl)benzoic acid EINECS 218-917-1 EC 218-917-1 UNII-A3PN1N22K1 CAS 2280-89-9

Purity 97%+In StockPharmaceutical Standards
CAS No.2280-89-9
Molecular FormulaC9H7I3N2O3
Molecular Weight571.88 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

2280-89-9 A3PN1N22K1 5-Amino-2,4,6-triiodo-N-methylisophthalamic acid 3-Amino-2,4,6-triiodo-5-((methylamino)carbonyl)benzoic acid EINECS 218-917-1 EC 218-917-1 UNII-A3PN1N22K1 CAS 2280-89-9 chemical structure

Description

CATO supplies 2280-89-9 A3PN1N22K1 5-Amino-2,4,6-triiodo-N-methylisophthalamic acid 3-Amino-2,4,6-triiodo-5-((methylamino)carbonyl)benzoic acid EINECS 218-917-1 EC 218-917-1 UNII-A3PN1N22K1 (CAS 2280-89-9), a certified reference material (molecular formula C9H7I3N2O3, MW 571.88 g/mol) for analytical method development and quality control.

2280-89-9 A3PN1N22K1 5-Amino-2,4,6-triiodo-N-methylisophthalamic acid 3-Amino-2,4,6-triiodo-5-((methylamino)carbonyl)benzoic acid EINECS 218-917-1 EC 218-917-1 UNII-A3PN1N22K1 (C9H7I3N2O3) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, iodine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.

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 FormulaC9H7I3N2O3
Molecular Weight571.88 g/mol
AppearanceOff-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility)
Purity97%+
StorageStore in a cool place (≤25°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; 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 ContentI-containing
Nitrogen Atoms2

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