1H-Indole-4,5-dione CAS 20342-63-6
| CAS No. | 20342-63-6 |
| Molecular Formula | C8H5NO2 |
| Molecular Weight | 147.13 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 1H-Indole-4,5-dione.
1H-Indole-4,5-dione (CAS 20342-63-6) is a high-purity analytical reference standard with the molecular formula C8H5NO2 and a molecular weight of 147.13 g/mol.
Structurally, 1H-Indole-4,5-dione (C8H5NO2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 147.13 g/mol, it falls into the low-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.
CATO manufactures 1H-Indole-4,5-dione 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 | C8H5NO2 |
| Molecular Weight | 147.13 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Nitrogen Atoms | 1 |
Related H Standards
- Indole-3-carbinol (CAS 700-06-1)
- 1H-Indole-4,7-diamine (CAS 184485-83-4)
- 1H-Indole-1,6-diamine (CAS 877470-73-0)
- 1H-indole-4,6-diamine (CAS 885518-11-6)
- 1H-Indole-5,6-diamine (CAS 865654-28-0)
- 1H-Indole-6,7-diamine (CAS 313063-53-5)
- Indole-3-carboxaldehyde-13C (CAS 1093452-52-8)
- 1H-indole, 4-ethyl- (CAS 344748-71-6)
Recommended Standards
- 1H-Benzotriazole-1-carboxaldehyde (CAS 72773-04-7)
- 1H-Pyrazolo[3,4-c]pyridine-5-carboxaldehyde (CAS 885223-61-0)
- 1,3-Benzodioxole-5-carbonitrile (CAS 4421-09-4)
- 1H-Pyrazolo[4,3-b]pyridine-5-carbaldehyde (CAS 955127-78-3)
- (3-(Aminomethyl)piperidin-1-yl)(cyclopropyl)methanone (CAS 915924-36-6)
- 7-bromo-5H-pyrrolo[3,2-d]pyrimidin-4-amine (CAS 1311275-33-8)
- 1,3-Propane-2,2-d2-diamine 2HCl (CAS 352438-79-0)
- 2-Cyano-6-fluoropyridine-4-sulfonyl chloride (CAS 1393559-75-5)
- Ethyl 2-(dimethylamino)-2-phenylacetate (CAS 6319-70-6)
- 3-(3,5-Dichlorophenyl)acrylaldehyde (CAS 1240489-53-5)
- Atosiban Impurity 101 (CAS CATO-C4X-2293101)
- Methyl 6-bromo-9H-pyrido[3,4-b]indole-1-carboxylate (CAS 127661-47-6)
- 4-(2-Hydroxyethoxy)-3-nitropyridine (CAS 859776-95-7)
- [Nva12]-Tirzepatide (CAS CATO-C4X-324042)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com