Big Endothelin-1 (22-38), human CAS 124932-61-2
| CAS No. | 124932-61-2 |
| Molecular Formula | C80H125N23O25 |
| Molecular Weight | 1808.99 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
Big Endothelin-1 (22-38), human (CAS 124932-61-2) is a high-purity analytical reference standard with the molecular formula C80H125N23O25 and a molecular weight of 1808.99 g/mol.
Based on its molecular formula C80H125N23O25, Big Endothelin-1 (22-38), human 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 1808.99 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).
As a certified reference material (CRM), Big Endothelin-1 (22-38), human meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C80H125N23O25 |
| Molecular Weight | 1808.99 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) | 30.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1992 |
| Nitrogen Atoms | 23 |
Related Big Standards
- Big Endothelin-1 (22-39), bovine (CAS 133474-20-1)
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- Big Endothelin-3 (22-41) amide (human) (CAS 174283-52-4)
- (Ala1·3·11·1?)-Endothelin-1 (CAS 121204-87-3)
- Endothelin-2 (human, canine) (CAS 123562-20-9)
- Endothelin-3 (human, mouse, rabbit, rat) (CAS 117399-93-6)
- Endothelin (16-21) (CAS 121377-67-1)
- Endothelin-1 (human, bovine, dog, mouse, porcine, rat) (CAS 117399-94-7)
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