| CAS No. | 6157-20-6 |
| Molecular Formula | - |
| Molecular Weight | 64.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
2-Butene-d8 (gas) (cis/trans mixture) (CAS 6157-20-6) is a high-purity analytical reference standard with the molecular formula C4D8 and a molecular weight of 64.16 g/mol.
Structurally, 2-Butene-d8 (gas) (cis/trans mixture) (C4D8) contains deuterium isotope labeling. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 64.16 g/mol, it falls into the low-molecular-weight range. 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).
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.
| Molecular Formula | C4D8 |
| Molecular Weight | 64.16 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 |
| CAS Registry Year (est.) | 1958 |