rel-Diethyl (2R,3S)-oxirane-2,3-dicarboxylate CAS 3291-46-1
| CAS No. | 3291-46-1 |
| Molecular Formula | C8H12O5 |
| Molecular Weight | 188.18 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.
rel-Diethyl (2R,3S)-oxirane-2,3-dicarboxylate (CAS 3291-46-1), molecular formula C8H12O5 and molecular weight 188.18 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of rel-Diethyl (2R,3S)-oxirane-2,3-dicarboxylate (C8H12O5) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).
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 | C8H12O5 |
| Molecular Weight | 188.18 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°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.) | 1957 |
Related rel Standards
- Diethyl 2-oxobutanedioate (CAS 108-56-5)
- Diethyl (2R,3R)-oxirane-2,3-dicarboxylate (CAS 74243-85-9)
- Diethyl (2S,3S)-oxirane-2,3-dicarboxylate (CAS 73890-18-3)
- Diethyl 2-formylmalonate (CAS 33142-25-5)
- Diethyl 2-hydroxyfumarate (CAS 53241-93-3)
- Diethyl 2-hydroxyfumarate (CAS 98790-56-8)
- rel-Diethyl (2R,3R)-oxirane-2,3-dicarboxylate (CAS 66647-17-4)
- diethyl ethylmalonate (CAS 133-13-1)
Recommended Standards
- W-2429 (CAS 37795-69-0)
- Rel-(1R,3S,5s)-5-hydroxycyclohexane-1,3-dicarboxylic acid (CAS 38859-10-8)
- 208511-67-5 4-(1H-pyrazol-3-yl)benzoic acid DTXSID00370896 (CAS 208511-67-5)
- Quinolin-8-ylcarbamic acid (CAS 876492-30-7)
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