1-(2,3-Dichlorophenyl)-5-oxopyrrolidine-3-carboxylic acid CAS 299920-48-2
| CAS No. | 299920-48-2 |
| Molecular Formula | C11H9Cl2NO3 |
| Molecular Weight | 274.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 1-(2,3-Dichlorophenyl)-5-oxopyrrolidine-3-carboxylic acid.
CATO supplies 1-(2,3-Dichlorophenyl)-5-oxopyrrolidine-3-carboxylic acid (CAS 299920-48-2), a certified reference material (molecular formula C11H9Cl2NO3, MW 274.10 g/mol) for analytical method development and quality control.
Based on its molecular formula C11H9Cl2NO3, 1-(2,3-Dichlorophenyl)-5-oxopyrrolidine-3-carboxylic acid 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 274.10 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.
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 | C11H9Cl2NO3 |
| Molecular Weight | 274.10 g/mol |
| Appearance | Off-white to pale 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Dichlorophenyl Standards
- 1-(3,4-dichlorophenyl)-2-oxopyrrolidine-3-carboxylic acid (CAS 10006-67-4)
- 1-(2,5-Dichlorophenyl)-2-oxopyrrolidine-3-carboxylic acid (CAS 1017417-38-7)
- 1-(3,5-Dichlorophenyl)-2-oxopyrrolidine-3-carboxylic acid (CAS 1017427-84-7)
- (1-(3,4-Dichlorophenyl)-1H-1,2,3-triazole-4,5-diyl)dimethanol (CAS 129748-81-8)
- 3-(3,4-Dichlorophenyl)-5-methyl-4,5-dihydro-1,2-oxazole-5-carboxylic acid (CAS 1326810-45-0)
- 3-(2,3-Dichlorophenyl)-5-methyl-4,5-dihydroisoxazole-5-carboxylic acid (CAS 1326813-25-5)
- 3-(2,4-Dichlorophenyl)-5-methyl-4,5-dihydroisoxazole-5-carboxylic acid (CAS 1326815-54-6)
- 1-(2,4-Dichlorophenyl)-5-oxopyrrolidine-3-carboxylic acid (CAS 91064-23-2)
Recommended Standards
- 3-Cyclopropyl-4-iodo-1-methyl-5-vinyl-1H-pyrazole (CAS 1956328-22-5)
- 3-(2-Iodobenzyl)oxetane (CAS 1823364-22-2)
- 1-(2,5-Dichlorophenyl)-5-oxopyrrolidine-3-carboxylic acid (CAS 91064-24-3)
- 4-(Difluoromethyl)-5-nitro-2-(trifluoromethoxy)pyridin-3-ol (CAS 1806742-10-8)
- 2-(4-(Trifluoromethyl)-1H-imidazol-2-yl)pyridine (CAS 33468-85-8)
- 5-Butyl-6-hydroxy-2-methylpyrimidin-4(3H)-one (CAS 72790-00-2)
- 2-[5-(trifluoromethyl)pyridin-2-yl]propanedinitrile (CAS 377760-12-8)
- 3-amino-3-methyl-1-(4-phenylpiperazin-1-yl)butan-1-one dihydrochloride (CAS 1584493-50-4)
- 4-(4-Fluorophenyl)-5-(methylsulfonyl)pyrimidin-2-amine (CAS 1710472-34-6)
- 4-Methylnicotinoyl chloride (CAS 155136-54-2)
- Sodium 5-(3-ethynylphenylamino)pyrimido[4,5-c]quinoline-8-carboxylate (CAS 1333382-30-1)
- Imidazo[5,1-c][1,2,4]triazin-4-amine (CAS 253878-29-4)
- 5,6,7,8-Tetrahydro-4h-cyclohepta[b]thiophene-2-carboxylic acid (CAS 40133-08-2)
- [5-31]-Semaglutide (CAS CATO-C4X-2226263)
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