Ethyl 5-bromo-1-naphthoate CAS 91271-31-7
| CAS No. | 91271-31-7 |
| Molecular Formula | C13H11BrO2 |
| Molecular Weight | 279.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Ethyl 5-bromo-1-naphthoate (C13H11BrO2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 279.13 g/mol, it falls into the medium-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
CATO supplies Ethyl 5-bromo-1-naphthoate (CAS 91271-31-7), a certified reference material (molecular formula C13H11BrO2, MW 279.13 g/mol) for analytical method development and quality control.
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 | C13H11BrO2 |
| Molecular Weight | 279.13 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1983 |
| Halogen Content | Br-containing |
Related Ethyl Standards
- Ethyl 3-bromo-2-naphthoate (CAS 1013915-73-5)
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- (3-Bromo-4,5-dihydro-isoxazol-5-ylmethyl)-carbamic acid tert-butyl ester (CAS 109770-82-3)
- 4-Bromo-2-(3,5-dimethyl-1h-pyrazol-1-yl)benzaldehyde (CAS 1152645-10-7)
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Recommended Standards
- Ethyl 4-Bromo-1-naphthoate (CAS 51934-43-1)
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- 2-((3-Amino-4-hydroxyphenyl)sulfonamido)benzoic acid (CAS 91-35-0)
- Drotaverine Impurity 2 (CAS 6298-46-0)
- Methyl 2-(2-amino-6-oxo-1,6-dihydropyrimidin-4-yl)acetate (CAS 86944-08-3)
- 5-But-3-en-1-yl-1,3,4-oxadiazol-2-amine (CAS 1219827-75-4)
- (S)-8-(3,5-Difluorophenyl)-8-methyl-6,9-diazaspiro[4.5]decan-10-one (CAS 1189569-77-4)
- 2-[2-(3,4-difluorophenyl)-1,3-thiazol-4-yl]acetic acid (CAS 1156584-75-6)
- Semaglutide (CAS 910463-68-2)
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