5-methyl-2,3-dihydro-1H-indole CAS 65826-95-1
| CAS No. | 65826-95-1 |
| Molecular Formula | C9H17N |
| Molecular Weight | 139.24 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 5-methyl-2,3-dihydro-1H-indole is closely related to a nitrile group in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
5-methyl-2,3-dihydro-1H-indole (CAS 65826-95-1), molecular formula C9H17N and molecular weight 139.24 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C9H17N, 5-methyl-2,3-dihydro-1H-indole contains a nitrile group; these features give the compound characteristic molecular-ion distribution patterns in mass spectrometry. The molecular weight of 139.24 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C9H17N |
| Molecular Weight | 139.24 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1975 |
| Nitrogen Atoms | 1 |
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- 2-(Dihydro-2H-thiopyran-4(3H)-ylidene)acetonitrile (CAS 204651-42-3)
- 5,6-Dihydro-1H-pyrrolizine-3(2H)-thione (CAS 347380-76-1)
- 5-Methyl-5,6-dihydro-4H-thieno[2,3-c]pyrrole (CAS 365998-43-2)
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Recommended Standards
- 4-tert-Butyl-1,2,3,6-tetrahydropyridine (CAS 61293-33-2)
- 6,6-Dimethylbicyclo[3.1.1]Heptan-2-amine (CAS 64284-82-8)
- 3-methyl-octahydro-1H-indole (CAS 37865-94-4)
- 9-azabicyclo[6.2.0]decane (CAS 7489-52-3)
- N-(2-Formyl-4-nitrophenyl)-4-methylbenzenesulfonamide (CAS 39119-35-2)
- (S)-tert-Butyl 1-(cyclopentylmethyl)pyrrolidin-3-ylcarbamate (CAS 1286208-59-0)
- 4,5,6,7-Tetrahydrofuro[3,2-c]pyridine-2-carboxylic acid (CAS 1368140-82-2)
- 3-Fluoropyrrolidine-3-carboxylic acid hydrochloride (CAS 1228583-53-6)
- Tri-tert-butylphosphonium Tetrafluoroborate (CAS 131274-22-1)
- 4-(4-(Benzyloxy)-2-methylbenzoyl)-5-(3-ethoxy-4-hydroxyphenyl)-3-hydroxy-1-(2-methoxyethyl)-1H-pyrrol-2(5H)-one (CAS 488123-24-6)
- N-(4-((Methylthio)methyl)thiazol-2-yl)cyclopentanecarboxamide (CAS 955820-54-9)
- 1-(3-((2-Aminoethyl)(methyl)amino)pyrrolidin-1-yl)ethanone (CAS 1353985-50-8)
- Zileuton-D4 (CAS 1189878-76-9)
- Fibrinopeptide B (human) (CAS 36204-23-6)
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