Ethyl 5-(benzyloxy)-4-methyl-1H-indole-2-carboxylate CAS 19646-48-1
| CAS No. | 19646-48-1 |
| Molecular Formula | C19H19NO3 |
| Molecular Weight | 309.36 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Ethyl 5-(benzyloxy)-4-methyl-1H-indole-2-carboxylate (CAS 19646-48-1), molecular formula C19H19NO3 and molecular weight 309.36 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, Ethyl 5-(benzyloxy)-4-methyl-1H-indole-2-carboxylate (C19H19NO3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 309.36 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
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 | C19H19NO3 |
| Molecular Weight | 309.36 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 chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Nitrogen Atoms | 1 |
Related Ethyl Standards
- Methyl 3-(5-(benzyloxy)-1H-indol-3-yl)propanoate (CAS 101890-43-1)
- (R)-3-(Benzyloxy)-2-(((tert-butoxycarbonyl)amino)methyl)propanoic acid (CAS 1287146-61-5)
- Ethyl 5-(Benzyloxy)indole-3-acetate (CAS 163688-25-3)
- (R)-3-(((Benzyloxy)carbonyl)amino)-4-(tert-butoxy)butanoic acid (CAS 2350078-91-8)
- (S)-3-(Benzyloxy)-2-(((tert-butoxycarbonyl)amino)methyl)propanoic acid (CAS 865704-62-7)
- Ethyl 4-(benzyloxy)-6-methyl-1H-indole-2-carboxylate (CAS 65751-97-5)
- Ethyl 5-(benzyloxy)-3-methyl-1H-indole-2-carboxylate (CAS 61905-89-3)
- 2-(1-((Benzyloxy)carbonyl)pyrrolidin-2-yl)-2-(methylthio)acetic acid (CAS 1353959-33-7)
Recommended Standards
- O-benzyl-N-(tert-butoxycarbonyl)-N-methyl-D-serine (CAS 193085-38-0)
- rac-(3R,4S)-1-[(tert-butoxy)carbonyl]-4-(1,5-dimethyl-1H-pyrazol-4-yl)pyrrolidine-3-carboxylic acid (CAS 1969287-99-7)
- 7-(tert-Butyl) 2-ethyl 8-methyl-5,6-dihydroimidazo[1,2-a]pyrazine-2,7(8H)-dicarboxylate (CAS 1891074-65-9)
- (2E)-1-(Morpholin-4-yl)-3-(3-phenoxyphenyl)prop-2-en-1-one (CAS 294853-81-9)
- 3-(3,5-Dimethoxyphenyl)-1,2-oxazol-5-ol (CAS 1354918-91-4)
- 3-(5-Cyano-2-{[3-(trifluoromethyl)phenyl]sulfanyl}phenyl)-1-phenylurea (CAS 478249-42-2)
- 6,8-Difluoro-chroman-4-ylamine hydrochloride (CAS 1187928-83-1)
- 4,6-Dimethylpyrimidine-2-carboxamide (CAS 73937-25-4)
- n-Octanal Diethyl Acetal (CAS 54889-48-4)
- 126312-03-6 2-(1-Benzothiophen-2-yl)ethan-1-amine--hydrogen chloride (1/1) DTXSID40716633 (CAS 126312-03-6)
- 10-(3,5-Dibromophenyl)-10H-phenoxazine (CAS 1313412-21-3)
- 5-(2-Methoxy-5-(trifluoromethyl)phenyl)oxazole (CAS 2364584-66-5)
- 5-(Benzyloxy)-6-methoxyquinazolin-4(1H)-one (CAS 120075-51-6)
- Tirzepatide Impurity 59 (CAS CATO-C4X-324059)
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