Ethynylbenzene-13C2 CAS 263012-32-4
| CAS No. | 263012-32-4 |
| Molecular Formula | C6[13C]2H6 |
| Molecular Weight | 104.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to an aromatic ring system, Ethynylbenzene-13C2 is typically off-white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 104.12 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
Ethynylbenzene-13C2 (CAS 263012-32-4) is a high-purity analytical reference standard with the molecular formula C6[13C]2H6 and a molecular weight of 104.12 g/mol.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C6[13C]2H6 |
| Molecular Weight | 104.12 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
Related Ethynylbenzene Standards
- 1-Ethyl-2-ethynylbenzene (CAS 75659-49-3)
- 1-Ethyl-3-ethynylbenzene (CAS 29074-77-9)
- 1-Ethyl-4-ethynylbenzene (CAS 40307-11-7)
- 3-Ethynylbenzene-1,2-diamine (CAS 61921-13-9)
- 4-Ethynylbenzene-1,2-diamine (CAS 58297-31-7)
- 3-Ethynylbenzene-1,2-diol (CAS 1314907-42-0)
- 5-Ethynylbenzene-1,3-diol (CAS 145078-84-8)
- 4-Ethynylbenzene-1,3-diol (CAS 1804946-18-6)
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- Semaglutide Impurity 7 (CAS CATO-C4X-22267)
Why CATO?
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