3-Formyl-1-methyl-1H-indole-2-carboxylic Acid CAS 174094-26-9
| CAS No. | 174094-26-9 |
| Molecular Formula | C11H9NO3 |
| Molecular Weight | 203.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 3-Formyl-1-methyl-1H-indole-2-carboxylic Acid (CAS 174094-26-9), a certified reference material (molecular formula C11H9NO3, MW 203.19 g/mol) for analytical method development and quality control.
3-Formyl-1-methyl-1H-indole-2-carboxylic Acid (C11H9NO3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C11H9NO3 |
| Molecular Weight | 203.19 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.) | 2006 |
| Nitrogen Atoms | 1 |
Related Formyl Standards
- 3-Formyl-1-methyl-1H-indole-4-carboxylic acid (CAS 1019117-17-9)
- 2-(2-Formyl-1h-indol-3-yl)acetic acid (CAS 118361-82-3)
- Methyl 3-Formyl-1H-indole-5-carboxylate (CAS 197506-83-5)
- 2-(4-Formyl-1H-indol-1-yl)acetic acid (CAS 219685-09-3)
- 2-(5-Formyl-1H-indol-1-yl)acetic acid (CAS 219685-11-7)
- 2-(6-Formyl-1H-indol-1-yl)acetic acid (CAS 952934-01-9)
- 3-Formyl-5-methyl-1H-indole-2-carboxylic acid (CAS 842971-74-8)
- Methyl 2-formyl-1H-indole-5-carboxylate (CAS 880360-85-0)
Recommended Standards
- 1-(2-Methoxyphenyl)-1H-pyrrole-2,5-dione (CAS 17392-68-6)
- Methyl 6-hydroxyisoquinoline-1-carboxylate (CAS 174299-02-6)
- Methyl 3-hydroxyquinoline-2-carboxylate (CAS 171917-61-6)
- 1-Propionyl-1H-indole-2,3-dione (CAS 17529-69-0)
- 3,4-Dibenzylfuran-2,5-dione (CAS 71481-05-5)
- 2-Bromo-N-(2-ethoxyphenyl)propanamide (CAS 1211447-43-6)
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- 28064-14-4 Phenol, polymer with formaldehyde, glycidyl ether Phenol, polymer with formaldehyde, oxiranylmethyl ether (CAS 28064-14-4)
- Semaglutide impurity 40 (CAS CATO-C4X-222640)
Why CATO?
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