4-Methoxybut-2-enoic acid CAS 75933-65-2
| CAS No. | 75933-65-2 |
| Molecular Formula | C5H8O3 |
| Molecular Weight | 116.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO supplies 4-Methoxybut-2-enoic acid (CAS 75933-65-2), a certified reference material (molecular formula C5H8O3, MW 116.12 g/mol) for analytical method development and quality control.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, 4-Methoxybut-2-enoic acid is typically white to off-white liquid. Its solid-state physicochemical attributes — including a molecular weight of 116.12 g/mol — guide the selection of appropriate sample preparation and analytical techniques.
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 | C5H8O3 |
| Molecular Weight | 116.12 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1978 |
Related Methoxybut Standards
- 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-ynoic Acid (CAS 24303-64-8)
- Methyl 4-methoxybut-2-ynoate (CAS 69511-47-3)
- (E)-(4-Methoxybut-1-en-1-yl)boronic acid (CAS 1062617-71-3)
- (E)-4-Methoxybut-2-en-1-ol (CAS 22427-04-9)
- 4-Methoxybut-2-en-1-amine (CAS 1314989-12-2)
Recommended Standards
- 4-Hydroxytetrahydro-2H-pyran-2-one (CAS 61892-56-6)
- 4-Methoxydihydrofuran-3(2H)-one (CAS 625100-11-0)
- 4-hydroxypyran-2-one (CAS 50607-32-4)
- 5-(aminomethyl)-1,2-dihydro-1,2,4-triazol-3-one (CAS 83160-78-5)
- ((1R,3S)-3-aminocyclohexyl)methanol (CAS 921040-76-8)
- (2S)-N-methyloxolane-2-carboxamide (CAS 1222386-56-2)
- 2-[(5-amino-4h-1,2,4-triazol-3-yl)amino]ethan-1-ol (CAS 147751-28-8)
- Enrofloxacin Impurity 13 (CAS 2388490-12-6)
- 1-(4-(Imidazo[1,2-a]pyridin-3-yl)phenyl)ethanone (CAS 59182-04-6)
- Tert-butyl 3-(hydroxymethyl)-3-methoxypyrrolidine-1-carboxylate (CAS 1782481-29-1)
- 2-(Aminomethyl)-4-(difluoromethyl)-3-hydroxypyridine-6-acetic acid (CAS 1807008-51-0)
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- 1-(Bromomethyl)-1-(2-ethoxyethoxy)-4-methylcyclohexane (CAS 1247997-66-5)
- [Tyr0] Fibrinopeptide A, human (CAS 103226-11-5)
Why CATO?
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