66954-40-3 beta-Endorphin (1-27) beta-Endorphin, 28-de-L-lysine-29-de-L-lysine-30-deglycine-31-de-L-glutamine- beta-Endorphin(1-27) CAS 66954-40-3
| CAS No. | 66954-40-3 |
| Molecular Formula | C136H215N35O39S |
| Molecular Weight | 2996.44 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.
66954-40-3 beta-Endorphin (1-27) beta-Endorphin, 28-de-L-lysine-29-de-L-lysine-30-deglycine-31-de-L-glutamine- beta-Endorphin(1-27) (CAS 66954-40-3) is a high-purity analytical reference standard with the molecular formula C136H215N35O39S and a molecular weight of 2996.44 g/mol.
Based on its molecular formula C136H215N35O39S, 66954-40-3 beta-Endorphin (1-27) beta-Endorphin, 28-de-L-lysine-29-de-L-lysine-30-deglycine-31-de-L-glutamine- beta-Endorphin(1-27) contains a nitrogen-containing heterocyclic scaffold, 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 2996.44 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C136H215N35O39S |
| Molecular Weight | 2996.44 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) | 47.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1976 |
| Nitrogen Atoms | 35 |
| Sulfur Atoms | 1 |
Related beta Standards
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