1-Ethyl-6-methoxy-1H-indole-3-carbaldehyde CAS 733747-53-0
| CAS No. | 733747-53-0 |
| Molecular Formula | C12H13NO2 |
| Molecular Weight | 203.24 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
1-Ethyl-6-methoxy-1H-indole-3-carbaldehyde (CAS 733747-53-0), molecular formula C12H13NO2 and molecular weight 203.24 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, 1-Ethyl-6-methoxy-1H-indole-3-carbaldehyde is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 203.24 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO manufactures 1-Ethyl-6-methoxy-1H-indole-3-carbaldehyde 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 | C12H13NO2 |
| Molecular Weight | 203.24 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| 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.) | 1986 |
| Nitrogen Atoms | 1 |
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Recommended Standards
- 1-Ethyl-5-methoxy-1h-indole-3-carbaldehyde (CAS 842975-56-8)
- 1H-indol-3-yl butyrate (CAS 4346-15-0)
- 1-Ethyl-4-hydroxy-6-methylquinolin-2(1H)-one (CAS 54675-21-7)
- 1-Isobutylindoline-2,3-dione (CAS 78846-77-2)
- 5-Bromonicotinohydrazide (CAS 112193-41-6)
- N,N-Bis(4-chlorophenyl)-2,4-dimethylaniline (CAS 228718-48-7)
- 3-Fluoro-4-(2H-1,2,3,4-tetrazol-5-yl)aniline (CAS 1171930-26-9)
- 3958-03-0 Tetrabromothiophene Thiophene, tetrabromo- (8CI)(9CI) EINECS 223-554-7 NSC 65427 2,3,4,5-Tetrabromothiophene (CAS 3958-03-0)
- 3'-Fluoro-4'-methyl-[1,1'-biphenyl]-3-carbaldehyde (CAS 885964-68-1)
- 2-Chloro-3-nitrothiophene (CAS 5330-98-3)
- 6-Chloro-1H-pyrrolo[3,2-c]pyridin-3-amine (CAS 1190320-39-8)
- 2-(tert-Butyl)-5-cyclopropoxy-N-methylisonicotinamide (CAS 1243480-28-5)
- Naphazoline EP Impurity A HCl (CAS 73664-32-1)
- Semaglutide impurity 289 (CAS CATO-C4X-2226289)
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