Somatostatin Impurity 18 CAS CATO-C4X-235018
| CAS No. | CATO-C4X-235018 |
| Molecular Formula | C76H107N18O25S2 |
| Molecular Weight | 1736.90 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C76H107N18O25S2, Somatostatin Impurity 18 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 1736.90 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).
CATO supplies Somatostatin Impurity 18 (CAS CATO-C4X-235018), a pharmacopoeial impurity reference standard (molecular formula C76H107N18O25S2, MW 1736.90 g/mol) used for the identification and quantification of trace impurities in APIs.
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.
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 | C76H107N18O25S2 |
| Molecular Weight | 1736.90 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) | 32.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 18 |
| Sulfur Atoms | 2 |
Related Somatostatin Standards
- Somatostatin Impurity 19 (CAS CATO-C4X-235019)
- Somatostatin Impurity 16 (CAS CATO-C4X-235016)
- (Tyr1)-Somatostatin-14 (CAS 59481-23-1)
- Somatostatin Impurity 14 (CAS CATO-C4X-235014)
- Somatostatin Impurity 2 (CAS CATO-C4X-23502)
- Somatostatin Impurity 3 (CAS CATO-C4X-23503)
- Somatostatin Impurity 4 (CAS CATO-C4X-23504)
- Tyr-Somatostatin-14 (CAS 58100-03-1)
Recommended Standards
- THA8 (CAS 1637413-82-1)
- Sugammadex Impurity 52 (CAS 2458187-21-6)
- Des-[Gly77,His78] Myelin Basic Protein (68-84), bovine (CAS 98474-59-0)
- TRAP-14 amide (CAS 141923-36-6)
- Darolutamide Impurity 22 (CAS CATO-C4X-310622)
- Milrinone Impurity 3 (CAS 98293-81-3)
- Bacampicillin Impurity 2 (CAS 71774-55-5)
- (3AR,4S,4aR,7aR,8R,9aR)-4a,8-dimethyl-3-methylene-2,5-dioxo-2,3,3a,4,4a,5,7a,8,9,9a-decahydroazuleno[6,5-b]furan-4-yl acetate (CAS 10180-86-6)
- 3-chloro-4,4,4-trifluoro-2-phenylbutanal (CAS 680215-46-7)
- Thiodiphosphoric Acid Tetramethyl Ester (CAS 51120-35-5)
- Methyl 4-chloro-5-methyl-2-nitrobenzoate (CAS 1807268-54-7)
- N-((4-allyl-5-((3-methoxybenzyl)thio)-4H-1,2,4-triazol-3-yl)methyl)-4-chlorobenzenesulfonamide (CAS 338422-27-8)
- Methyl 4-(benzyloxy)-3,5-dichlorobenzoate (CAS 536974-83-1)
- Proinsulin C-Peptide (55-89) (human) (CAS 11097-48-6)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com