4,7-Dioxo-4,7-dihydro-1H-indole-3-carboxylic acid CAS 50469-21-1
| CAS No. | 50469-21-1 |
| Molecular Formula | C9H5NO4 |
| Molecular Weight | 191.14 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.
4,7-Dioxo-4,7-dihydro-1H-indole-3-carboxylic acid (CAS 50469-21-1) is a high-purity analytical reference standard with the molecular formula C9H5NO4 and a molecular weight of 191.14 g/mol.
Structurally, 4,7-Dioxo-4,7-dihydro-1H-indole-3-carboxylic acid (C9H5NO4) 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 191.14 g/mol, it falls into the medium-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
CATO manufactures 4,7-Dioxo-4,7-dihydro-1H-indole-3-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 | C9H5NO4 |
| Molecular Weight | 191.14 g/mol |
| Appearance | Pale yellow to 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1971 |
| Nitrogen Atoms | 1 |
Related Dioxo Standards
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Recommended Standards
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- 2-(Difluoromethyl)-4-fluoropyridine-5-acetonitrile (CAS 1806769-61-8)
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- 4-(4-Aminopyridin-3-yl)-N,N-dimethylbenzamide (CAS 1125429-67-5)
- N,N,3-trimethylpyrrolidin-3-amine dihydrochloride (CAS 2172503-18-1)
- 7-BENZYL-2-ISOPROPYL-5,6,7,8-TETRAHYDROPYRIDO[3,4-D]PYRIMIDIN-4-OL (CAS 1112190-18-7)
- (E)-5-(2-Fluorobenzylidene)-2-mercaptothiazol-4(5H)-one (CAS 1784763-12-7)
- 9-Fluoro-2,3,4,5-tetrahydro-1H-benzo[c]azepine (CAS 1185110-93-3)
- 4-((1-Methylpiperidin-4-yl)amino)butan-1-ol (CAS 1247828-04-1)
- Ethyl(4-methoxyphenyl)sulfane (CAS 7205-58-5)
- CBP501 Affinity Peptide trifluoroacetate salt (CAS 1351804-17-5)
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