3-(Phenylethynyl)thiophene CAS 131423-29-5
| CAS No. | 131423-29-5 |
| Molecular Formula | C12H8S |
| Molecular Weight | 184.26 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 3-(Phenylethynyl)thiophene is closely related to sulfur-containing functionality, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
3-(Phenylethynyl)thiophene (CAS 131423-29-5) is a high-purity analytical reference standard with the molecular formula C12H8S and a molecular weight of 184.26 g/mol.
Based on its molecular formula C12H8S, 3-(Phenylethynyl)thiophene contains sulfur-containing functionality, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 184.26 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 | C12H8S |
| Molecular Weight | 184.26 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1994 |
| Sulfur Atoms | 1 |
Related Phenylethynyl Standards
- 2-(Phenylethynyl)thiophene (CAS 4805-17-8)
- 1-(Phenylethynyl)pyrrolidin-2-one (CAS 683246-77-7)
- 3-(Phenylethynyl)piperidine (CAS 1260782-26-0)
- 4-(Phenylethynyl)piperidine (CAS 654663-00-0)
- 1-(Phenylethynyl)cyclopentanol (CAS 25118-60-9)
- 3-(Phenylethynyl)oxazolidin-2-one (CAS 888329-88-2)
- 5-(Phenylethynyl)pyrimidine (CAS 71418-88-7)
- 2-(Phenylethynyl)pyridine (CAS 13141-42-9)
Recommended Standards
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