b-Endorphin (18-31) (human) (H-5686.0500) CAS 74216-35-6
| CAS No. | 74216-35-6 |
| Molecular Formula | C75H122N20O20 |
| Molecular Weight | 1623.89 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.
b-Endorphin (18-31) (human) (H-5686.0500) (CAS 74216-35-6), molecular formula C75H122N20O20 and molecular weight 1623.89 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C75H122N20O20, b-Endorphin (18-31) (human) (H-5686.0500) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 1623.89 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).
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 | C75H122N20O20 |
| Molecular Weight | 1623.89 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) | 25.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1978 |
| Nitrogen Atoms | 20 |
Related b Standards
- α-Endorphin (CAS 59004-96-5)
- γ-Endorphin (CAS 60893-02-9)
- β-Endorphin (6-31) (human) (CAS 77761-27-4)
- 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)
- Acetyl-δ-Endorphin (bovine, camel, mouse, ovine) (CAS 78325-29-8)
- β-Endorphin TFA salt (human) (CAS 61214-51-5（free base）)
- b-Endorphin (equine) (H-5636.0001) (CAS 79495-86-6)
- b-Endorphin (bovine, camel, mouse) (H-2705.0001) (CAS 59887-17-1)
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