2-Chloro-1-(1-methyl-5-nitro-1H-pyrrol-2-yl)ethanone CAS 53391-20-1
| CAS No. | 53391-20-1 |
| Molecular Formula | C7H7ClN2O3 |
| Molecular Weight | 202.60 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-Chloro-1-(1-methyl-5-nitro-1H-pyrrol-2-yl)ethanone (CAS 53391-20-1), molecular formula C7H7ClN2O3 and molecular weight 202.60 g/mol, is a CATO reference standard with documented purity and traceability.
2-Chloro-1-(1-methyl-5-nitro-1H-pyrrol-2-yl)ethanone (C7H7ClN2O3) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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), 2-Chloro-1-(1-methyl-5-nitro-1H-pyrrol-2-yl)ethanone 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 | C7H7ClN2O3 |
| Molecular Weight | 202.60 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1972 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chloro Standards
- 6-Chloro-2-ethoxy-3-nitropyridine (CAS 1094323-19-9)
- 2-Chloro-N,N-dimethyl-5-nitropyrimidin-4-amine (CAS 1131-14-2)
- 1-(2-Chloro-5-nitropyridin-4-yl)ethanol (CAS 1214241-89-0)
- Methyl 6-chloro-2-methoxypyrimidine-4-carboxylate (CAS 127840-06-6)
- Methyl 2-chloro-6-methoxypyrimidine-4-carboxylate (CAS 127861-30-7)
- 4-Chloro-2,6-dimethoxypyrimidine-5-carbaldehyde (CAS 134221-52-6)
- 2-Chloro-3-ethoxy-5-nitropyridine (CAS 1352910-89-4)
- 4-Chloro-6-ethyl-5-nitro-2-pyrimidinamine (CAS 1384431-00-8)
Recommended Standards
- 2,6-Dimethoxy-4-pyrimidinecarbonyl chloride (CAS 52759-24-7)
- 2-Chloro-3-methoxy-6-nitroaniline (CAS 89975-38-2)
- 2-(2-Chloro-4-nitrophenyl)ethanol (CAS 69395-15-9)
- 2-Chloro-4-ethoxy-5-nitropyridine (CAS 2089301-54-0)
- 5-(2,4-Difluorophenyl)oxazolidin-2-one (CAS 1494490-18-4)
- N-(3-(Dimethylamino)propyl)propionimidamide hydrochloride (CAS 1427057-53-1)
- Ethyl (4-(9H-pyrido[3,4-b]indol-1-yl)phenyl)carbamate (CAS 833430-88-9)
- [(Ethylmethylamino)methyl]-phosphonic Acid Diethyl Ester (CAS 137734-62-4)
- 1-Ethynyl-3-methyl-5-(trifluoromethyl)benzene (CAS 2166730-36-3)
- [1-(2,2,2-Trifluoroethyl)cyclobutyl]methanamine (CAS 1849283-85-7)
- 1-((2-Bromophenyl)thio)-3,3-dimethylbutan-2-one (CAS 1152622-42-8)
- 3-[([1,1-Biphenyl]-4-ylmethoxy)methyl]-pyrrolidine hydrochloride (CAS 1219968-11-2)
- 6-Bromo-7-methoxy-1H-indazole (CAS 1374651-60-1)
- Tirzepatide Impurity 15 (CAS CATO-C4X-324015)
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