1-Ethyl-5-methyl-4-nitro-1H-pyrrole-2-carboxylic acid CAS 183268-95-3
| CAS No. | 183268-95-3 |
| Molecular Formula | C8H10N2O4 |
| Molecular Weight | 198.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C8H10N2O4, 1-Ethyl-5-methyl-4-nitro-1H-pyrrole-2-carboxylic acid contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 198.18 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO supplies 1-Ethyl-5-methyl-4-nitro-1H-pyrrole-2-carboxylic acid (CAS 183268-95-3), a certified reference material (molecular formula C8H10N2O4, MW 198.18 g/mol) for analytical method development and quality control.
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.
CATO manufactures 1-Ethyl-5-methyl-4-nitro-1H-pyrrole-2-carboxylic acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C8H10N2O4 |
| Molecular Weight | 198.18 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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 |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2009 |
| Nitrogen Atoms | 2 |
Recommended Standards
- [4-(2,2,2-trifluoroethyl)tetrahydropyran-4-yl]methanol (CAS 1823992-20-6)
- 5-Ethyl-1-methyl-4-nitro-1H-pyrrole-2-carboxylic acid (CAS 183268-98-6)
- 8-(Cyanomethoxy)imidazo[1,2-a]pyridine-3-carbonitrile (CAS 1823631-24-8)
- Ethyl 1-methyl-5-nitro-1H-pyrrole-2-carboxylate (CAS 1872-41-9)
- N-(4-Formyl-2-hydroxyphenyl)methanesulfonamide (CAS 1243406-86-1)
- N-(2,4-Dimethylphenyl)-2,2-diphenylacetamide (CAS 70298-68-9)
- Ethyl 2-chloro-6-(propan-2-yl)pyridine-3-carboxylate (CAS 100129-72-4)
- Ethyl 2-(2,2-dimethylpiperidin-4-yl)acetate hydrochloride (CAS 104094-97-5)
- 3-((1-Isopropylpiperidin-4-yl)amino)propan-1-ol (CAS 1038277-92-7)
- 3-Chloro-N-(3-iodophenyl)benzamide (CAS 897752-37-3)
- Procaterol Impurity 6 (CAS CATO-C4X-18106)
- 2-((Tert-butoxycarbonyl)amino)-3-(thiazol-4-yl)propanoic acid (CAS 119378-93-7)
- 1-(4-Fluorophenyl)pentan-2-one (CAS 141235-14-5)
- Semaglutide impurity 227 (CAS CATO-C4X-2226227)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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