Trans-diethyl 4-methylenecyclopentane-1,2-dicarboxylate CAS 63649-25-2
| CAS No. | 63649-25-2 |
| Molecular Formula | C12H18O4 |
| Molecular Weight | 226.27 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 226.27 g/mol gives Trans-diethyl 4-methylenecyclopentane-1,2-dicarboxylate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Trans-diethyl 4-methylenecyclopentane-1,2-dicarboxylate (CAS 63649-25-2) is a high-purity analytical reference standard with the molecular formula C12H18O4 and a molecular weight of 226.27 g/mol.
Structurally, Trans-diethyl 4-methylenecyclopentane-1,2-dicarboxylate (C12H18O4) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 226.27 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.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C12H18O4 |
| Molecular Weight | 226.27 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.) | 1975 |
Related Trans Standards
- Diethyl cyclohex-4-ene-1,2-dicarboxylate (CAS 13043-60-2)
- Diethyl 2-(bicyclo[1.1.1]Pentan-1-yl)malonate (CAS 131515-32-7)
- 1,1-diethyl cyclohex-3-ene-1,1-dicarboxylate (CAS 38511-09-0)
- 1,2-Diethyl (1R,2S)-rel-cyclohex-4-ene-1,2-dicarboxylate (CAS 4841-85-4)
- Diethyl (1R,2R)-cyclohex-4-ene-1,2-dicarboxylate (CAS 5048-50-0)
- Diethyl (1S,2S)-cyclohex-4-ene-1,2-dicarboxylate (CAS 548786-21-6)
- Diethyl 2-(2-methylbut-3-yn-2-yl)malonate (CAS 21079-27-6)
- Diethyl 2-(cyclopent-2-en-1-yl)malonate (CAS 53608-93-8)
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