Ethyl 3-hydroxy-1-methyl-1H-indole-2-carboxylate CAS 42871-90-9
| CAS No. | 42871-90-9 |
| Molecular Formula | C12H13NO3 |
| Molecular Weight | 219.24 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Ethyl 3-hydroxy-1-methyl-1H-indole-2-carboxylate (CAS 42871-90-9) is a high-purity analytical reference standard with the molecular formula C12H13NO3 and a molecular weight of 219.24 g/mol.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, Ethyl 3-hydroxy-1-methyl-1H-indole-2-carboxylate is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 219.24 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C12H13NO3 |
| Molecular Weight | 219.24 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, 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.) | 1969 |
| Nitrogen Atoms | 1 |
Related Ethyl Standards
- Ethyl 3-hydroxy-5-methyl-1H-indole-2-carboxylate (CAS 1060803-17-9)
- 3-Hydroxy-1-isobutylpyrido[2,3-b]pyrazin-2(1H)-one (CAS 1443285-87-7)
- Ethyl 3-hydroxy-4-methyl-1H-indole-2-carboxylate (CAS 153501-38-3)
- 7-Hydroxy-3-methyl-1H,3H,3aH,4H,5H-[1,3]oxazolo[3,4-a]quinolin-1-one (CAS 1824633-17-1)
- (R)-2-(4-Hydroxy-2-butyl)isoindoline-1,3-dione (CAS 245728-73-8)
- (S)-2-(4-Hydroxy-2-butyl)isoindoline-1,3-dione (CAS 545376-10-1)
- 1-Ethyl-5-hydroxy-2-methyl-1h-indole-3-carboxylic acid (CAS 38189-61-6)
- 2-(1-Hydroxy-2-methylpropan-2-yl)-2,3-dihydro-1h-isoindole-1,3-dione (CAS 4490-74-8)
Recommended Standards
- Ethyl 3-(hydroxymethyl)-1H-indole-2-carboxylate (CAS 666752-02-9)
- Ethyl 3-hydroxy-7-methyl-1H-indole-2-carboxylate (CAS 459818-00-9)
- Ethyl 3-(4-cyano-3-hydroxyphenyl)propanoate (CAS 246219-43-2)
- Ethyl 3-isocyanato-3-phenylpropanoate (CAS 88636-83-3)
- Dehydroevodiamine hydrochloride (CAS 75853-60-0)
- N-Benzyl-5-(thiophen-2-yl)-1,3,4-oxadiazol-2-amine (CAS 918964-45-1)
- (3aR,5s,6aS)-5-Methoxyoctahydrocyclopenta[c]pyrrole hydrochloride (CAS 1326303-21-2)
- 2-(9-Bromononyloxy)tetrahydropyran (CAS 55695-90-4)
- 4-(1,3-oxazol-2-yl)pyridine (CAS 5998-92-5)
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- (S)-1-(3-Chlorophenyl)-2,2,2-trifluoroethan-1-amine hydrochloride (CAS 1391426-98-4)
- 5-Methyl-[1,2,4]triazolo[1,5-a]pyrimidine-7-thiol (CAS 34270-41-2)
- ethyl 6-chloropyrazolo[1,5-a]pyrimidine-2-carboxylate (CAS 1005209-44-8)
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