2,4-Dichloro-5-nitrobenzaldehyde CAS 53581-87-6
| CAS No. | 53581-87-6 |
| Molecular Formula | C7H3Cl2NO3 |
| Molecular Weight | 220.01 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2,4-Dichloro-5-nitrobenzaldehyde (CAS 53581-87-6), molecular formula C7H3Cl2NO3 and molecular weight 220.01 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system, 2,4-Dichloro-5-nitrobenzaldehyde is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 220.01 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
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 Formula | C7H3Cl2NO3 |
| Molecular Weight | 220.01 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| 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 methanol, ethanol, DMSO, water |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1972 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Dichloro Standards
- 2,4-Dichloro-6-nitrobenzaldehyde (CAS 1086837-72-0)
- 2,3-Dichloro-4-nitrobenzaldehyde (CAS 1437548-44-1)
- 2,4-Dichloro-3-nitrobenzaldehyde (CAS 1804897-06-0)
- 3,4-Dichloro-2-nitrobenzaldehyde (CAS 1804897-10-6)
- 3,4-Dichloro-5-nitrobenzaldehyde (CAS 1806356-60-4)
- 2,3-Dichloro-6-nitrobenzaldehyde (CAS 75618-41-6)
- 2,6-Dichloro-3-nitrobenzaldehyde (CAS 5866-97-7)
- 3,5-Dichloro-2-nitrobenzaldehyde (CAS 59178-12-0)
Recommended Standards
- (3-Fluoro-5-(4-methyl-1H-pyrazol-1-yl)phenyl)boronic acid (CAS 2225180-88-9)
- 2-Amino-4-iodopyridine (CAS 552331-00-7)
- (3-Fluoro-5-(4-methyl-1H-imidazol-1-yl)phenyl)boronic acid (CAS 2225155-55-3)
- 2-Chloro-3-nitrobenzoyl chloride (CAS 34128-16-0)
- 1-(2-Chloroethoxy)-3-isopropoxybenzene (CAS 915924-15-1)
- 4-Methyl-1,3-thiazole-2-carbohydrazide (CAS 100516-76-5)
- (4-(tert-Butyl)phenyl)trichlorosilane (CAS 17886-89-4)
- 3-Hydroxy-2,3-dimethylbutan-2-yl hydrogen (4-(furan-2-yl)thiazol-5-yl)boronate (CAS 2223011-19-4)
- 3-Chloro-6-(4-ethylpiperazin-1-yl)pyridazine (CAS 939598-19-3)
- 3-Aminomethylphthalide HCl (CAS 35690-69-8)
- 5,6-Dichloroacenaphthene (CAS 4208-97-3)
- 3,3-difluoro-2,2-dimethylbutan-1-amine hydrochloride (CAS 2060007-94-3)
- 3-Hydroxy-4-nitroisoindolin-1-one (CAS 39830-63-2)
- Insulin Degludec Impurity 2 (CAS CATO-C4X-21572)
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