4-(1-Butyl-1H-indol-2-yl)benzoic acid CAS 88561-06-2
| CAS No. | 88561-06-2 |
| Molecular Formula | C19H19NO2 |
| Molecular Weight | 293.36 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 4-(1-Butyl-1H-indol-2-yl)benzoic acid is closely related to a steroid core, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 4-(1-Butyl-1H-indol-2-yl)benzoic acid (CAS 88561-06-2), a certified reference material (molecular formula C19H19NO2, MW 293.36 g/mol) for analytical method development and quality control.
The molecular framework of 4-(1-Butyl-1H-indol-2-yl)benzoic acid (C19H19NO2) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C19H19NO2 |
| Molecular Weight | 293.36 g/mol |
| Appearance | Pale yellow to 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1982 |
| Nitrogen Atoms | 1 |
Recommended Standards
- 4-(1-Benzyl-1h-indol-3-yl)butanoic acid (CAS 270074-53-8)
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- 4-((Tert-butoxycarbonyl)amino)-5-phenylpentanoic acid (CAS 790223-54-0)
- 4-(2-Methoxyphenyl)-3-methyl-1-tosyl-1H-pyrazol-5-amine (CAS 895013-43-1)
- N-(((9H-fluoren-9-yl)methoxy)carbonyl)-O-((S)-2-hydroxypropyl)-N-methyl-L-serine (CAS 2255322-23-5)
- Neodymium(III) iodide (CAS 13813-24-6)
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- 3-(((4-Amino-6-methylpyrimidin-2-yl)thio)methyl)benzonitrile (CAS 1099756-82-7)
- Ethyl 2-methyl-6-oxopiperidine-3-carboxylate (CAS 1823424-84-5)
- Nintedanib Impurity 43 (CAS 59276-28-7)
- 4-(1-Ethyl-5-methyl-1h-pyrazol-4-yl)-2-hydrazinyl-6-(trifluoromethyl)pyrimidine (CAS 1006320-20-2)
- Semaglutide impurity 194 (CAS CATO-C4X-2226194)
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