4-Iodo-2-nitroaniline CAS 20691-72-9
| CAS No. | 20691-72-9 |
| Molecular Formula | C6H5IN2O2 |
| Molecular Weight | 264.02 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 4-Iodo-2-nitroaniline (CAS 20691-72-9), a certified reference material (molecular formula C6H5IN2O2, MW 264.02 g/mol) for analytical method development and quality control.
4-Iodo-2-nitroaniline (C6H5IN2O2) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, iodine substitution, an aromatic ring system. 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
CATO manufactures 4-Iodo-2-nitroaniline under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C6H5IN2O2 |
| Molecular Weight | 264.02 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Halogen Content | I-containing |
| Nitrogen Atoms | 2 |
Related Iodo Standards
- 2-Iodo-6-nitroaniline (CAS 100704-34-5)
- 3-Iodo-5-nitroaniline (CAS 10394-64-6)
- 4-Iodo-3-nitroaniline (CAS 105752-04-3)
- 2-Iodo-4-methyl-3-nitropyridine (CAS 1163297-86-6)
- 4-Iodo-2-methyl-3-nitropyridine (CAS 1245268-77-2)
- 2-Iodo-6-methyl-3-nitropyridine (CAS 1595744-66-3)
- 2-Iodo-5-methyl-3-nitropyridine (CAS 1598838-80-2)
- 2-Iodo-3-methyl-5-nitropyridine (CAS 49767-15-9)
Recommended Standards
- 4-Hydroxy-3-iodobenzoic acid, 97% (CAS 37470-46-5)
- 5-Hydroxy-2-iodobenzoic Acid (CAS 57772-57-3)
- 3-Iodo-4-nitroaniline (CAS 721925-18-4)
- 5-Iodo-2-methyl-3-nitropyridine (CAS 905439-49-8)
- 2-Chloro-5-methyl-1H-indole-3-carbaldehyde (CAS 535924-79-9)
- Potassium 2,2'-((2-(bis(carboxymethyl)amino)ethyl)azanediyl)diacetate (CAS 2001-94-7)
- 2-Cyano-N-(2-methoxyphenyl)-3-(4-methoxyphenyl)propanamide (CAS 505065-21-4)
- 3-[Bis(2-methylpropyl)amino]propanoic acid (CAS 433695-38-6)
- 1-(3-Chloropropyl)piperidine-4-carboxamide (CAS 129846-88-4)
- Tert-butyl 2-ethyl-1-oxa-4,9-diazaspiro[5.5]Undecane-9-carboxylate (CAS 1400643-34-6)
- 2-Amino-N-((1-ethylpiperidin-2-yl)methyl)-4-methoxypyrimidine-5-carboxamide (CAS 84332-19-4)
- 3,4-Dimethoxy-N-(thiophen-3-ylmethyl)aniline (CAS 864422-00-4)
- Palonosetron Impurity 23 2HCl (CAS 2216755-70-1（free base）)
- Semaglutide impurity 84 (CAS CATO-C4X-222684)
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