3-Methyl-2-oxo-2,3-dihydro-1h-indole-5-carboxylic acid CAS 167627-06-7
| CAS No. | 167627-06-7 |
| Molecular Formula | C10H9NO3 |
| Molecular Weight | 191.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
3-Methyl-2-oxo-2,3-dihydro-1h-indole-5-carboxylic acid (CAS 167627-06-7) is a high-purity analytical reference standard with the molecular formula C10H9NO3 and a molecular weight of 191.18 g/mol.
Based on its molecular formula C10H9NO3, 3-Methyl-2-oxo-2,3-dihydro-1h-indole-5-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 191.18 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).
As a certified reference material (CRM), 3-Methyl-2-oxo-2,3-dihydro-1h-indole-5-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 | C10H9NO3 |
| Molecular Weight | 191.18 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2004 |
| Nitrogen Atoms | 1 |
Recommended Standards
- 1-Methyl-2-oxo-2,3-dihydro-1H-indole-5-carboxylic acid (CAS 167627-05-6)
- 5-ethoxy-1H-indole-2,3-dione (CAS 169040-78-2)
- 7-Methyl-2-oxoindoline-5-carboxylic acid (CAS 167627-04-5)
- 8-Methoxyindolizine-7-carboxylic acid (CAS 1706444-91-8)
- tert-Butyl 2-(2-oxo-2,3-dihydro-1H-benzimidazol-1-yl)ethylcarbamate (CAS 834881-65-1)
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