Biotin-PEG4-alkyne CAS 1458576-00-5
| CAS No. | 1458576-00-5 |
| Molecular Formula | C21H35N3O6S |
| Molecular Weight | 457.58 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Biotin-PEG4-alkyne (CAS 1458576-00-5) is a high-purity analytical reference standard with the molecular formula C21H35N3O6S and a molecular weight of 457.58 g/mol.
Based on its molecular formula C21H35N3O6S, Biotin-PEG4-alkyne contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 457.58 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
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 | C21H35N3O6S |
| Molecular Weight | 457.58 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1992 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Biotin Standards
- Biotin-PEG4-yne (CAS 1262681-31-1)
- Biotin-PEG4-allyl (CAS 1643661-79-3)
- 2-(Biotin-amido)-1,3-bis-(C1-PEG1-acid) (CAS 2086689-02-1)
- Biotin-PEG3-propionic hydrazide (CAS 1381861-94-4)
- Biotin-PEG4-Amine (CAS 663171-32-2)
- Biotin-maleimide (CAS 116919-18-7)
- (+)-Biotin-PEG3-acid (CAS 252881-76-8)
- Biotin-PEG2-C4-alkyne (CAS 1011268-28-2)
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