1-Ethynyl-2-isopropylbenzene CAS 75659-50-6
| CAS No. | 75659-50-6 |
| Molecular Formula | C11H12 |
| Molecular Weight | 144.21 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.
1-Ethynyl-2-isopropylbenzene (CAS 75659-50-6) is a high-purity analytical reference standard with the molecular formula C11H12 and a molecular weight of 144.21 g/mol.
Owing to an aromatic ring system, 1-Ethynyl-2-isopropylbenzene is typically off-white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 144.21 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.
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 | C11H12 |
| Molecular Weight | 144.21 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1978 |
Related Ethynyl Standards
- 1-Ethynyl-4-isopropylbenzene (CAS 23152-99-0)
- 1-Ethynyl-4-propylbenzene (CAS 62452-73-7)
- 2-Ethynyl-1,3,5-trimethylbenzene (CAS 769-26-6)
- 2-Ethynyl-4-methylbenzaldehyde (CAS 1015731-87-9)
- 5-Ethynyl-2,3-dihydro-1H-pyrrolo[2,3-b]pyridine (CAS 1060795-33-6)
- 2-Ethynyl-5-methylbenzaldehyde (CAS 1309565-96-5)
- 5-Ethynyl-2,3-dihydro-1-benzofuran (CAS 132464-87-0)
- 7-Ethynyl-2,3-dihydrobenzofuran (CAS 1594068-22-0)
Recommended Standards
- 1-Cyclopropyl-4-ethenylbenzene (CAS 19824-39-6)
- 1-Cyclopenten-1-ylbenzene (CAS 825-54-7)
- 1-Butyl-3,3-dimethylurea (CAS 52696-91-0)
- 1-Hexylurea (CAS 2158-11-4)
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