4-(4-Fluoroanilino)-3-nitrobenzoic acid CAS 23764-56-9
| CAS No. | 23764-56-9 |
| Molecular Formula | C13H9FN2O4 |
| Molecular Weight | 276.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies 4-(4-Fluoroanilino)-3-nitrobenzoic acid (CAS 23764-56-9), a certified reference material (molecular formula C13H9FN2O4, MW 276.22 g/mol) for analytical method development and quality control.
4-(4-Fluoroanilino)-3-nitrobenzoic acid (C13H9FN2O4) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine 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. 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.
Physical & Chemical Properties
| Molecular Formula | C13H9FN2O4 |
| Molecular Weight | 276.22 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
Related Fluoroanilino Standards
- 2-[(4-Fluoroanilino)carbonyl]cyclohexanecarboxylic acid (CAS 414877-51-3)
- 5-[2-(4-Fluoroanilino)vinyl]-3-(methylsulfanyl)-4-isothiazolecarbonitrile (CAS 338751-14-7)
- Methyl 4-{[(3-fluoroanilino)carbonyl]amino}-2-methoxybenzenecarboxylate (CAS 477889-70-6)
- Ethyl 4-(4-fluoroanilino)-8-methyl-3-quinolinecarboxylate (CAS 371213-55-7)
- 3-(4-Fluoroanilino)-1-(2-phenyl-1,3-thiazol-5-yl)-2-propen-1-one (CAS 338414-54-3)
- 6-{2-[(4-fluoroanilino)carbothioyl]carbohydrazonoyl}-2,1,3-benzoxadiazol-1-ium-1-olate (CAS 286008-42-2)
- 3-(Ethyl-4-fluoroanilino)propanoic acid (CAS 944886-19-5)
- (E)-4-{4-[(4-Fluoroanilino)sulfonyl]anilino}-4-oxo-2-butenoic acid (CAS 349470-42-4)
Recommended Standards
- 2-Hydroxy-4,5-diphenyl-1,3,2-dioxaphospholane 2-oxide (CAS 97176-53-9)
- 4-(4-Fluorophenoxy)-3-nitrobenzenecarbaldehyde oxime (CAS 320416-62-4)
- 2-(Dimethoxyphosphoryl)-3-oxobutyl pent-4-ynoate (CAS 329795-18-8)
- 5-Fluoro-2-O-methyluridine (CAS 61671-80-5)
- N-(3-Bromobenzyl)-2-chloro-N-ethylacetamide (CAS 1353961-36-0)
- Ethyl 4-6-O-benzylidene-2-deoxy-2-phthalimido-β-D-thioglucopyranoside (CAS 129519-28-4)
- 2-Bromo-6-(difluoromethyl)-5-methoxynicotinonitrile (CAS 1805399-21-6)
- 3-(1-Ethyl-3-piperidinyl)benzoic acid (CAS 1784665-99-1)
- tert-Butyl (1-phenylethyl)carbamate (CAS 33036-40-7)
- 4-Borono-2,6-difluorobenzoic acid (CAS 1029716-94-6)
- 4-(3-Methylpyridin-2-yl)pyrimidin-2-amine (CAS 1203147-55-0)
- (S)-N-(4-(1-Hydroxyethyl)phenyl)acetamide (CAS 934692-06-5)
- N2-(2-Aminoethyl)pyridine-2,3-diamine (CAS 1247630-86-9)
- Neuropeptide Y (human, rat) trifluoroacetate salt (CAS 90880-35-6)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com