Insulin B (22-25) CAS 34367-73-2
| CAS No. | 34367-73-2 |
| Molecular Formula | C26H35N7O5 |
| Molecular Weight | 525.60 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 525.60 g/mol gives Insulin B (22-25) distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Insulin B (22-25) (CAS 34367-73-2) is a high-purity analytical reference standard with the molecular formula C26H35N7O5 and a molecular weight of 525.60 g/mol.
Based on its molecular formula C26H35N7O5, Insulin B (22-25) contains a steroid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 525.60 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), Insulin B (22-25) 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 | C26H35N7O5 |
| Molecular Weight | 525.60 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1966 |
| Nitrogen Atoms | 7 |
Related Insulin Standards
- Insulin Degludec Impurity 25 (CAS CATO-C4X-215725)
- Insulin Degludec Impurity 28 (CAS CATO-C4X-215728)
- Insulin Degludec Impurity 9 (CAS CATO-C4X-21579)
- Insulin Degludec Impurity 10 (CAS CATO-C4X-215710)
- Insulin Degludec Impurity 16 (CAS CATO-C4X-215716)
- Insulin Degludec Impurity 14 (CAS CATO-C4X-215714)
- Insulin Degludec Impurity 15 (CAS CATO-C4X-215715)
- Insulin Degludec Impurity 12 (CAS CATO-C4X-215712)
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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