4-Ethyl-1-naphthoic Acid CAS 91902-58-8
| CAS No. | 91902-58-8 |
| Molecular Formula | C13H12O2 |
| Molecular Weight | 200.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 4-Ethyl-1-naphthoic Acid is closely related to a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 4-Ethyl-1-naphthoic Acid (CAS 91902-58-8), a certified reference material (molecular formula C13H12O2, MW 200.23 g/mol) for analytical method development and quality control.
The molecular framework of 4-Ethyl-1-naphthoic Acid (C13H12O2) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. 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 | C13H12O2 |
| Molecular Weight | 200.23 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1983 |
Related Ethyl Standards
- 7-Ethyl-1-naphthoic acid (CAS 824430-41-3)
- 4-Acetyl-1-naphthoic acid (CAS 131986-05-5)
- 3-Methyl-1-naphthoic acid (CAS 5774-05-0)
- 3-Methyl-2-naphthoic acid (CAS 39110-32-2)
- 6-Methyl-1-naphthoic Acid (CAS 6315-19-1)
- 7-Methyl-2-naphthoic acid (CAS 5159-64-8)
- 4-Propyl-1-naphthoic Acid (CAS 107777-22-0)
- 2-Naphthoic Acid (CAS 93-09-4)
Recommended Standards
- 4-Ethoxy-3-(ethoxymethyl)-1-methyl-1H-pyrazol-5-ol (CAS 92214-12-5)
- 4-Fluoro-3-methoxy-5-(methylthio)benzaldehyde (CAS 2090518-69-5)
- 4-Ethoxy-1-naphthaldehyde (CAS 54784-08-6)
- 4-methoxy-1-benzofuran-2-carboxylic acid (CAS 50551-59-2)
- (R)-2-((tert-Butoxycarbonyl)amino)-4-(dimethylamino)-4-oxobutanoic acid (CAS 721928-03-6)
- H-Glu-Ala-pNA (L-1260.0025) (CAS 99524-10-4)
- 3-Bromo-4-(3,3-difluoroazetidin-1-yl)pyridine 1707391-22-7 (CAS 1707391-22-7)
- (1',3'-Dihydrospiro[cyclopropane-1,2'-inden]-2-yl)methanamine (CAS 1484634-62-9)
- 2-((2-Methylcyclopentyl)amino)cyclohexan-1-ol (CAS 1340347-43-4)
- (2-Chloropyridin-4-yl)methanamineHCl (CAS 916210-98-5)
- STACHYOSE (CAS 470-55-3)
- 3-(3-Bromo-4-fluorophenyl)propanoic acid (CAS 866862-24-0)
- (4-Chloro-2-nitrophenyl)(phenyl)sulfane (CAS 4548-56-5)
- [D-Glu]3-Semaglutide (CAS CATO-C4X-2226253)
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