Ethyl (2E,4S)-4,5-Isopropylidenedioxy-2-methylpent-2-enoate CAS 81997-76-4
| CAS No. | 81997-76-4 |
| Molecular Formula | C11H18O4 |
| Molecular Weight | 214.26 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C11H18O4, Ethyl (2E,4S)-4,5-Isopropylidenedioxy-2-methylpent-2-enoate contains a carboxylic acid group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 214.26 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 (2E,4S)-4,5-Isopropylidenedioxy-2-methylpent-2-enoate (CAS 81997-76-4) is a high-purity analytical reference standard with the molecular formula C11H18O4 and a molecular weight of 214.26 g/mol.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures Ethyl (2E,4S)-4,5-Isopropylidenedioxy-2-methylpent-2-enoate under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C11H18O4 |
| Molecular Weight | 214.26 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| 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.) | 1980 |
Recommended Standards
- DL-alpha-Methylpalmitic acid methyl ester (CAS 2490-53-1)
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- Ethyl (piperidine-4-carbonyl)glycinate (CAS 82827-44-9)
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- Methyl 3-(3-acetylphenyl)-5-fluorobenzoate (CAS 1820711-23-6)
- n-(3-Chloro-4-fluorobenzyl)-2-ethoxyethan-1-amine (CAS 1341755-02-9)
- 3-(2-Chloroethyl)-4,5-dimethylisoxazole (CAS 371932-99-9)
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- 1-(2-((4-Fluorobenzyl)oxy)phenyl)ethan-1-one (CAS 400878-24-2)
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- Peptide Impurity 82 (CAS 10491-78-8)
Why CATO?
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