3,4-Dichloro-1-(2-methoxyphenyl)-1H-pyrrole-2,5-dione CAS 29236-13-3
| CAS No. | 29236-13-3 |
| Molecular Formula | C11H7Cl2NO3 |
| Molecular Weight | 272.08 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C11H7Cl2NO3, 3,4-Dichloro-1-(2-methoxyphenyl)-1H-pyrrole-2,5-dione contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 272.08 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
3,4-Dichloro-1-(2-methoxyphenyl)-1H-pyrrole-2,5-dione (CAS 29236-13-3) is a high-purity analytical reference standard with the molecular formula C11H7Cl2NO3 and a molecular weight of 272.08 g/mol.
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 Formula | C11H7Cl2NO3 |
| Molecular Weight | 272.08 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-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 |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1965 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Dichloro Standards
- Methyl 6,8-dichloro-4-oxo-1,4-dihydroquinoline-2-carboxylate (CAS 1065074-55-6)
- Methyl 5,7-dichloro-4-hydroxyquinoline-2-carboxylate (CAS 130613-19-3)
- Methyl 5,7-dichloro-4-hydroxyquinoline-3-carboxylate (CAS 1820685-13-9)
- 3,4-Dichloro-1-(4-methoxyphenyl)-1H-pyrrole-2,5-dione (CAS 34379-53-8)
- 6,8-Dichloro-4-hydroxy-2-methylquinoline-3-carboxylic acid (CAS 92146-40-2)
- Methyl 2-(4,7-Dichloro-3-indolyl)-2-oxoacetate (CAS 2097800-61-6)
- Methyl 5,7-dichloro-4-oxo-1,4-dihydroquinoline-2-carboxylate (CAS 20843-48-5)
- 4,5-Dichloro-1-(4-nitrobenzyl)-1H-imidazole (CAS 1081145-80-3)
Recommended Standards
- 3-(3,5-Dichlorophenyl)-5-methylisoxazole-4-carboxylic acid (CAS 4402-88-4)
- 3-(3,4-Dichlorophenyl)-5-methyl-1,2-oxazole-4-carboxylic acid (CAS 4402-86-2)
- 3-Hydroxybutanoic (2S)-4-iodopyrrolidine-2-carboxylic anhydride (CAS 828276-64-8)
- 3-(2,5-Dichlorophenyl)-5-methylisoxazole-4-carboxylic acid (CAS 4402-81-7)
- 2-(2,3,4-Trimethoxyphenyl)pyridine (CAS 1243853-02-2)
- 1-(5-Chloropyrimidin-2-yl)piperidine-2-carboxylic acid (CAS 1261230-12-9)
- 4,4-dimethyl-1-(1,3-thiazol-4-yl)pentan-1-amine dihydrochloride (CAS 1803562-17-5)
- [2-Fluoro-6-methoxy-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]methanol (CAS 1417736-84-5)
- 5-(1H-benzo[d]imidazol-2-yl)-2-methylaniline (CAS 292644-33-8)
- 6-Methyl-N4-(3-(trifluoromethyl)phenyl)pyrimidine-2,4-diamine (CAS 843608-14-0)
- Atrasentan Impurity 2 (CAS CATO-C4X-33472)
- 4-(4-Pyridyl)phenylboronic Acid (CAS 1045332-30-6)
- 2-(Azetidin-2-yl)propan-2-ol hydrochloride (CAS 1824166-46-2)
- D-Lys20-Tirzepatide (CAS CATO-CPTD788914)
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