1-(5-Chloro-2-methylphenyl)-1h-pyrrole-2,5-dione CAS 58670-26-1
| CAS No. | 58670-26-1 |
| Molecular Formula | C11H8ClNO2 |
| Molecular Weight | 221.64 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 221.64 g/mol gives 1-(5-Chloro-2-methylphenyl)-1h-pyrrole-2,5-dione distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
1-(5-Chloro-2-methylphenyl)-1h-pyrrole-2,5-dione (CAS 58670-26-1), molecular formula C11H8ClNO2 and molecular weight 221.64 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C11H8ClNO2, 1-(5-Chloro-2-methylphenyl)-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 221.64 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 1-(5-Chloro-2-methylphenyl)-1h-pyrrole-2,5-dione meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C11H8ClNO2 |
| Molecular Weight | 221.64 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 tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; 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.) | 1973 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Chloro Standards
- 6-Chloro-4H-[1,3]dioxino[5,4-c]isoquinoline (CAS 106488-48-6)
- 4-Chloro-3-(1H-pyrrol-1-yl)benzoic acid (CAS 107946-72-5)
- 8-Chloro-2-methylquinoline-3-carboxylic acid (CAS 1089898-90-7)
- 7-Chloro-8-methylquinoline-2-carboxylic acid (CAS 1092305-25-3)
- 1-Acetyl-3-chloro-1H-indole-2-carbaldehyde (CAS 110912-14-6)
- 2-Chloro-3-(1-cyanocyclopropyl)benzoic acid (CAS 1123582-10-4)
- 4-Chloro-2-methylquinoline-7-carboxylic acid (CAS 1150618-20-4)
- N-[(4-chloro-1-phenyl-1H-imidazol-5-yl)methylidene]hydroxylamine (CAS 1181480-96-5)
Recommended Standards
- 1-(5-(3-Chlorophenyl)isoxazol-3-yl)ethanone (CAS 657424-83-4)
- 1-[(4-chlorophenyl)methyl]-2,5-dihydro-1H-pyrrole-2,5-dione (CAS 34569-29-4)
- 1-(4-chlorophenyl)-3-methylenedihydro-1H-pyrrole-2,5-dione (CAS 37010-62-1)
- 1-Allyl-5-chloroindoline-2,3-dione (CAS 343778-25-6)
- 4-Isopropyl-2,6-dimethylaniline (CAS 42014-59-5)
- N-hydroxy-1-methyl-1H-indazole-5-carbimidoyl chloride (CAS 1956426-70-2)
- 2-Pentyloxy-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzonitrile (CAS 2490666-08-3)
- Tert-butyl ((2r,4s)-6-azaspiro[3.4]Octan-2-yl)carbamate (CAS 2227197-75-1)
- Ammoxetine Impurity 18 (CAS CATO-C4X-335718)
- Methyl 7-(trifluoromethyl)-1H-indole-2-carboxylate (CAS 1362860-90-9)
- 5-Amino-1-(4-bromophenyl)-4-cyano-3-methyl-1H-pyrazole (CAS 76982-35-9)
- N-((1-(2,2-Difluoroethyl)-1H-pyrazol-4-yl)methyl)-1-isopropyl-1H-pyrazol-4-amine hydrochloride (CAS 1855951-28-8)
- 4-(5-Bromopyridin-3-yl)-benzonitrile (CAS 1563530-51-7)
- Semaglutide Impurity 177 (CAS CATO-C4X-2226177)
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