| CAS No. | 68039-27-0 |
| Molecular Formula | C9H16O3 |
| Molecular Weight | 172.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Methyl 2-ethyl-3-oxohexanoate (CAS 68039-27-0), molecular formula C9H16O3 and molecular weight 172.22 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, Methyl 2-ethyl-3-oxohexanoate is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 172.22 g/mol — guide the selection of appropriate sample preparation and analytical techniques.
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.
| Molecular Formula | C9H16O3 |
| Molecular Weight | 172.22 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1976 |