Ethyl 1-(3-methylbut-2-en-1-yl)-2-oxocyclopentane-1-carboxylate CAS 74016-16-3
| CAS No. | 74016-16-3 |
| Molecular Formula | C13H20O3 |
| Molecular Weight | 224.30 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Ethyl 1-(3-methylbut-2-en-1-yl)-2-oxocyclopentane-1-carboxylate (C13H20O3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. It is notably hygroscopic, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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 1-(3-methylbut-2-en-1-yl)-2-oxocyclopentane-1-carboxylate (CAS 74016-16-3), a certified reference material (molecular formula C13H20O3, MW 224.30 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 | C13H20O3 |
| Molecular Weight | 224.30 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1978 |
Related Ethyl Standards
- 2-(1-(3-Methylbut-2-en-1-yl)-3-oxopiperazin-2-yl)acetic acid (CAS 1033600-38-2)
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- 2-[(3-methylbut-2-en-1-yl)sulfanyl]benzoic acid (CAS 1019351-72-4)
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- 2-{3-[(3-methylbut-2-en-1-yl)oxy]phenyl}acetic acid (CAS 1061652-65-0)
- 7-((3-Methylbut-2-en-1-yl)oxy)-2H-chromen-2-one (CAS 10387-50-5)
- (E)-3-(4-((3-Methylbut-2-en-1-yl)oxy)phenyl)prop-2-en-1-ol (CAS 163634-05-7)
- Ethyl 2-(3-methylbut-3-en-1-yl)benzoate (CAS 731772-83-1)
Recommended Standards
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- Semaglutide (CAS 910463-68-2（free base）)
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