Timolol EP Impurity C Racemic CAS 610271-56-2
| CAS No. | 610271-56-2 |
| Molecular Formula | C19H31N7O4S2 |
| Molecular Weight | 485.62 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C19H31N7O4S2, Timolol EP Impurity C Racemic contains a flavonoid core, 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 485.62 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.
Timolol EP Impurity C Racemic (CAS 610271-56-2) is a certified pharmaceutical impurity reference standard with the molecular formula C19H31N7O4S2 and a molecular weight of 485.62 g/mol.
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
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 | C19H31N7O4S2 |
| Molecular Weight | 485.62 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Nitrogen Atoms | 7 |
| Sulfur Atoms | 2 |
Related Timolol Standards
- Timolol EP Impurity C (CAS 1391068-18-0)
- Timolol Impurity 29 (CAS CATO-C4X-149629)
- Timolol EP Impurity E (CAS 1026075-53-5)
- Timolol EP Impurity J (CAS CATO-C4X-149612)
- Timolol Impurity 21 (CAS CATO-C4X-149621)
- Timolol Impurity 23 (CAS CATO-C4X-149623)
- Timolol Impurity 25 (CAS CATO-C4X-149625)
- Timolol Impurity 28 (CAS CATO-C4X-149628)
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- Cyclohexanone-3,3,4,4,5,5-d6 (CAS 54513-99-4)
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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