1,1-Diethyl 3-oxocyclobutane-1,1-dicarboxylate CAS 99173-61-2
| CAS No. | 99173-61-2 |
| Molecular Formula | C10H14O5 |
| Molecular Weight | 214.22 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, an aromatic ring system, 1,1-Diethyl 3-oxocyclobutane-1,1-dicarboxylate is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 214.22 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).
1,1-Diethyl 3-oxocyclobutane-1,1-dicarboxylate (CAS 99173-61-2) is a high-purity analytical reference standard with the molecular formula C10H14O5 and a molecular weight of 214.22 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 | C10H14O5 |
| Molecular Weight | 214.22 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 methanol, ethanol, 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.) | 1985 |
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- 2-(2-Bromo-4-fluorophenoxy)-n-ethoxyacetamide (CAS 1197466-05-9)
- 4-Methoxy-3,3-dimethyl-1,3-dihydro-indol-2-one (CAS 192928-47-5)
- α-Phenyloxiranepropanenitrile (CAS 60788-53-6)
- N3-(tert-butyl)-N2-(3-(trifluoromethyl)phenyl)-3,4-dihydroisoquinoline-2,3(1H)-dicarboxamide (CAS 318517-12-3)
- Semaglutide impurity 204 (CAS CATO-C4X-2226204)
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