3,3-Dimethyl-2-oxopentanedioic acid CAS 112428-39-4
| CAS No. | 112428-39-4 |
| Molecular Formula | C7H10O5 |
| Molecular Weight | 174.15 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.
3,3-Dimethyl-2-oxopentanedioic acid (CAS 112428-39-4) is a high-purity analytical reference standard with the molecular formula C7H10O5 and a molecular weight of 174.15 g/mol.
The molecular framework of 3,3-Dimethyl-2-oxopentanedioic acid (C7H10O5) 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 | C7H10O5 |
| Molecular Weight | 174.15 g/mol |
| Purity | 97%+ |
| 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.) | 1989 |
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- Emedastine Impurity 12 (CAS CATO-C4X-226712)
- 1-(Bromomethyl)-3-iodo-5-(trifluoromethyl)benzene (CAS 1261795-42-9)
- (5-(2,4-difluorophenyl)-1H-imidazol-2-yl)methanamine (CAS 1156709-64-6)
- MK-6240 Precursor (CAS 1841444-11-8)
- Betamethasone β-D-Glucuronide (CAS 744161-79-3)
- 2-(4-Bromo-6-(difluoromethyl)-5-fluoropyridin-2-yl)acetonitrile (CAS 1804637-39-5)
- Semaglutide impurity 277 (CAS CATO-C4X-2226277)
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