Ethyl 4-nitro-1H-indole-2-carboxylate CAS 4993-93-5
| CAS No. | 4993-93-5 |
| Molecular Formula | C11H10N2O4 |
| Molecular Weight | 234.21 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 Ethyl 4-nitro-1H-indole-2-carboxylate.
Ethyl 4-nitro-1H-indole-2-carboxylate (CAS 4993-93-5), molecular formula C11H10N2O4 and molecular weight 234.21 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, Ethyl 4-nitro-1H-indole-2-carboxylate (C11H10N2O4) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 234.21 g/mol, it falls into the medium-molecular-weight range. 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), Ethyl 4-nitro-1H-indole-2-carboxylate 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 | C11H10N2O4 |
| Molecular Weight | 234.21 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 2 |
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Recommended Standards
- Ethyl 4-hydroxy-2-oxo-1,2-dihydro-1,6-naphthyridine-3-carboxylate (CAS 72668-49-6)
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- 1-oxidanidylquinolin-1-ium hydrate 1-oxidoquinolin-1-ium hydrate 64201-64-5 A834673 (CAS 64201-64-5)
- 3-(2-Hydroxyethyl)indolin-2-one (CAS 3690-95-7)
- 6,7-Difluoroisoindolin-1-one (CAS 1260671-13-3)
- (3-Phenylbicyclo[1.1.1]Pentan-1-yl)methanol (CAS 2165347-55-5)
- 1,1'-(5-((4,6-Diamino-1,3,5-triazin-2-yl)amino)-1,3-phenylene)diethanone (CAS 180741-01-9)
- (3Z)-3-[(Phenylamino)methylidene]-1,3-dihydro-2-benzothiophen-1-one (CAS 1164546-11-5)
- 5-Bromo-1-chloro-2-(propan-2-yloxy)-3-propoxybenzene (CAS 1881293-99-7)
- Insulin Glargine Metabolite M2 (CAS CATO-CPTD788867)
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