1,3,3-Trimethyl-5-oxocyclohexane-1-carboxylic acid CAS 91057-32-8
| CAS No. | 91057-32-8 |
| Molecular Formula | C10H16O3 |
| Molecular Weight | 184.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1,3,3-Trimethyl-5-oxocyclohexane-1-carboxylic acid (CAS 91057-32-8), molecular formula C10H16O3 and molecular weight 184.23 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, 1,3,3-Trimethyl-5-oxocyclohexane-1-carboxylic acid is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 184.23 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C10H16O3 |
| Molecular Weight | 184.23 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.) | 1983 |
Related Trimethyl Standards
- 2,2,3-Trimethyl-4-oxocyclohexane-1-carboxylic acid (CAS 15210-83-0)
- 2,5,6-trimethyl-4H,7H-[1,2,4]triazolo[1,5-a]pyrimidin-7-one (CAS 879624-34-7)
- 4,4,5-Trimethyl-5-(prop-2-yn-1-yloxy)-1,3-dioxolan-2-one (CAS 1269247-74-6)
- 2-[(trimethyl-1h-pyrazol-4-yl)oxy]acetic acid (CAS 1384713-18-1)
- 1,3,5-Trimethyl-3,7-diaza-bicyclo[3.3.1]-nonan-9-ol (CAS 169177-17-7)
- 2,6,8-Trimethyl-4-nonanone (CAS 123-18-2)
- N,3,3-Trimethyl-1-(pyrrolidin-1-yl)butan-2-amine (CAS 672310-03-1)
- Trimethyl((2-methylcyclohex-1-en-1-yl)oxy)silane (CAS 19980-35-9)
Recommended Standards
- 1,2-Difluoro-4-isopentylbenzene (CAS 2432848-63-8)
- 1,3-Dioxolane-4-methanol, α,5-diethenyl-2,2-dimethyl-, (4S,5R)- (CAS 683276-43-9)
- 1-(Tetrahydrofuran-2-yl)cyclopentane-1-carboxylic acid (CAS 2137557-91-4)
- 1-[3-fluoro-4-(methylsulfanyl)phenyl]ethan-1-one (CAS 2968-09-4)
- 3-(2-Furyl)-3-{[(4-methoxyphenyl)-sulfonyl]amino}propanoic acid (CAS 440646-62-8)
- gamma-Oryzanol（Mixture） (CAS 11042-64-1)
- Diiodo(phenyl)borane (CAS 17381-60-1)
- 2-Chloro-6-methoxyquinoline-3-carbaldehyde (CAS 73568-29-3)
- 1-Ethyl-3H-pyridazino[4,5-b]indol-4(5H)-one (CAS 90016-89-0)
- (R)-Benzyl (1-(2-aminoacetyl)pyrrolidin-3-yl)(cyclopropyl)carbamate (CAS 1354009-11-2)
- tert-Butyl 6-(aminomethyl)-2-azaspiro[3.3]heptane-2-carboxylate (CAS 1363380-79-3)
- 6-Cyclopropyl-4-methylpicolinic acid (CAS 1256820-05-9)
- 2-(Chloromethyl)pyrimidin-5-amine (CAS 1240598-93-9)
- Insulin Pork(≥27 USP units/mg) (CAS 12584-58-6)
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