2,2-Dimethyl-5-oxotetrahydrofuran-3-carboxylic acid CAS 79-91-4
| CAS No. | 79-91-4 |
| Molecular Formula | C7H10O4 |
| Molecular Weight | 158.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2,2-Dimethyl-5-oxotetrahydrofuran-3-carboxylic acid (CAS 79-91-4), molecular formula C7H10O4 and molecular weight 158.15 g/mol, is a CATO reference standard with documented purity and traceability.
2,2-Dimethyl-5-oxotetrahydrofuran-3-carboxylic acid (C7H10O4) contains a carboxylic acid group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
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 | C7H10O4 |
| Molecular Weight | 158.15 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| 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 Dimethyl Standards
- 4,4-Dimethyl-5-oxotetrahydrofuran-3-carboxylic acid (CAS 1188416-37-6)
- (R)-4,4-dimethyl-5-oxotetrahydrofuran-3-carboxylic acid (CAS 1188416-41-2)
- (S)-4,4-dimethyl-5-oxotetrahydrofuran-3-carboxylic acid (CAS 1188416-44-5)
- 2-(2,2-Dimethyl-5-oxo-1,3-dioxolan-4-yl)acetaldehyde (CAS 1401974-06-8)
- (S)-2,2-dimethyl-5-oxotetrahydrofuran-3-carboxylic acid (CAS 157007-74-4)
- Dimethyl 2-ethylidenemalonate (CAS 17041-60-0)
- (R)-2-(2,2-Dimethyl-5-oxo-1,3-dioxolan-4-yl)acetaldehyde (CAS 174563-68-9)
- (R)-2,2-dimethyl-5-oxotetrahydrofuran-3-carboxylic acid (CAS 783349-41-7)
Recommended Standards
- 2,2-Difluoro-2-(pyridin-4-yl)ethan-1-amine (CAS 393782-40-6)
- 2,3-Difluoro-1-methoxy-4-methylbenzene (CAS 261763-32-0)
- 2,2-Difluoro-2-(pyridin-3-yl)ethan-1-amine (CAS 60010-40-4)
- 2,3-Difluoro-4-methylbenzyl alcohol (CAS 252004-41-4)
- (4-Isopropylfuran-2-yl)boronic acid (CAS 2225180-98-1)
- Fmoc-aminooxy-PEG4-acid (CAS 1895922-70-9)
- trans-3-Nonen-2-one (CAS 18402-83-0)
- 5-((p-Tolylthio)methyl)isoxazol-3(2H)-one (CAS 89660-87-7)
- 2,3-Dihydro-1h-indene-1-carbaldehyde (CAS 37414-43-0)
- Ethyl 6,6-dimethyl-1-oxaspiro[2.5]octane-2-carboxylate (CAS 1483641-30-0)
- Rosuvastatin Impurity 232 (CAS CATO-C4X-1169232)
- 3-(Bromomethyl)-2-chloro-1,8-naphthyridine (CAS 1126424-63-2)
- Dibenzyltoluene (CAS 26898-17-9)
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