4-(2,3-Dichlorobenzoyl)-1-methyl-1H-pyrrole-2-carboxylic acid CAS 478249-67-1
| CAS No. | 478249-67-1 |
| Molecular Formula | C13H9Cl2NO3 |
| Molecular Weight | 298.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-(2,3-Dichlorobenzoyl)-1-methyl-1H-pyrrole-2-carboxylic acid (CAS 478249-67-1) is a high-purity analytical reference standard with the molecular formula C13H9Cl2NO3 and a molecular weight of 298.12 g/mol.
Structurally, 4-(2,3-Dichlorobenzoyl)-1-methyl-1H-pyrrole-2-carboxylic acid (C13H9Cl2NO3) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 298.12 g/mol, it falls into the medium-molecular-weight range. 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), 4-(2,3-Dichlorobenzoyl)-1-methyl-1H-pyrrole-2-carboxylic acid 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 | C13H9Cl2NO3 |
| Molecular Weight | 298.12 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 chloroform, dichloromethane, ethyl acetate, 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Dichlorobenzoyl Standards
- 4-(2,4-Dichlorobenzoyl)-1H-pyrrole-2-carbohydrazide (CAS 338977-25-6)
- 4-(2,4-Dichlorobenzoyl)-1-methyl-1H-pyrrole-2-carboxylic acid (CAS 320419-40-7)
- Methyl 4-(2,4-dichlorobenzoyl)-1H-pyrrole-2-carboxylate (CAS 453557-85-2)
- Methyl 4-(2,6-dichlorobenzoyl)-1H-pyrrole-2-carboxylate (CAS 338753-18-7)
- 4-(2,3-Dichlorobenzoyl)-1-methyl-1H-pyrrole-2-carboxamide (CAS 338753-49-4)
- 4-(2,6-Dichlorobenzoyl)-N-methyl-1H-pyrrole-2-carboxamide (CAS 338753-20-1)
- 2-(5-(2,4-Dichlorobenzoyl)thiophen-2-yl)acetonitrile (CAS 339014-61-8)
- 2-[5-(2,4-Dichlorobenzoyl)thiophen-3-yl]acetonitrile (CAS 338966-80-6)
Recommended Standards
- 3,4-Dichloro-N-(2-(furan-3-yl)-2-oxoethyl)benzamide (CAS 88353-03-1)
- 2-(Chloromethyl)-1-(4-chlorophenoxy)-4-nitrobenzene (CAS 924862-19-1)
- 2-(Benzyloxy)-1,3-dichloro-5-nitrobenzene (CAS 848133-03-9)
- 4-Iodo-1-(3-methylbenzyl)-1H-pyrazole (CAS 957505-76-9)
- 4-(3,4-Dimethoxy-2,6-dinitrophenyl)morpholine (CAS 861211-06-5)
- Ethyl 4-(piperidine-1-sulfonamido)benzoate (CAS 825607-11-2)
- Ethyl 2-(4-(hydroxymethyl)phenyl)oxazole-5-carboxylate (CAS 1365969-51-2)
- N-Dodecyl-2-(quinolin-8-yloxy)acetamide (CAS 88350-26-9)
- Ketoconazole impurity 33 (CAS CATO-C4X-147233)
- 3,3,3-Trifluoro-2-(3-fluorophenyl)propan-1-amine (CAS 1531521-68-2)
- tert-Butyl N-[(3S,4R)-4-hydroxypiperidin-3-yl]carbamate (CAS 1549812-73-8)
- (1S)-1-(1,3-Thiazol-2-yl)ethan-1-ol (CAS 104863-49-2)
- 4-Bromo-5-(hydroxymethyl)-2-methoxyphenol (CAS 655238-34-9)
- Tirzepatide Impurity 44 (CAS CATO-C4X-324044)
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