Somatostatin Impurity 3 CAS CATO-C4X-23503
| CAS No. | CATO-C4X-23503 |
| Molecular Formula | C78H106N18O20S2 |
| Molecular Weight | 1679.91 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
Somatostatin Impurity 3 (CAS CATO-C4X-23503) is a certified pharmaceutical impurity reference standard with the molecular formula C78H106N18O20S2 and a molecular weight of 1679.91 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Somatostatin Impurity 3 is typically pale yellow to yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 1679.91 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a certified reference material (CRM), Somatostatin Impurity 3 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 | C78H106N18O20S2 |
| Molecular Weight | 1679.91 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) | 35.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 18 |
| Sulfur Atoms | 2 |
Related Somatostatin Standards
- Somatostatin Impurity 2 (CAS CATO-C4X-23502)
- Somatostatin Impurity 4 (CAS CATO-C4X-23504)
- Somatostatin Impurity 22 (CAS CATO-C4X-235022)
- Somatostatin Impurity 14 (CAS CATO-C4X-235014)
- Somatostatin Impurity 17 (CAS CATO-C4X-235017)
- Somatostatin Impurity 21 (CAS CATO-C4X-235021)
- (Tyr11)-Somatostatin-14 (CAS 59481-27-5)
- Somatostatin-14 (reduced) (CAS 40958-31-4)
Recommended Standards
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