Ethyl 4-methoxybut-2-ynoate CAS 299184-99-9
| CAS No. | 299184-99-9 |
| Molecular Formula | C7H10O3 |
| Molecular Weight | 142.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, Ethyl 4-methoxybut-2-ynoate is typically white to off-white liquid. Its solid-state physicochemical attributes — including a molecular weight of 142.15 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
Ethyl 4-methoxybut-2-ynoate (CAS 299184-99-9) is a high-purity analytical reference standard with the molecular formula C7H10O3 and a molecular weight of 142.15 g/mol.
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 | C7H10O3 |
| Molecular Weight | 142.15 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 2025 |
Related Ethyl Standards
- (E)-(4-Methoxybut-1-en-1-yl)boronic acid (CAS 1062617-71-3)
- Methyl 4-methoxybut-2-ynoate (CAS 69511-47-3)
- (1-Methoxybut-3-en-1-yl)benzene (CAS 22039-97-0)
- 4-Methoxybut-3-enoic acid (CAS 142160-68-7)
- (Z)-2-methoxybut-2-enoic acid (CAS 88126-31-2)
- 2-Methoxybut-2-enoic acid (CAS 38588-37-3)
- 4-Methoxybut-2-enoic acid (CAS 75933-65-2)
- 4-Methoxybut-2-ynoic Acid (CAS 24303-64-8)
Recommended Standards
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