Timolol EP Impurity C Maleate CAS 610271-57-3
| CAS No. | 610271-57-3 |
| Molecular Formula | C19H31N7O4S2 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a process- or degradation-related impurity, Timolol EP Impurity C Maleate (CAS 610271-57-3, C19H31N7O4S2C4H4O4) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Owing to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Timolol EP Impurity C Maleate is typically pale yellow to yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 601.69 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
CATO manufactures Timolol EP Impurity C Maleate under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C19H31N7O4S2 C4H4O4 |
| Molecular Weight | 601.69 g/mol |
| 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) | 10.0 |
| 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 E (CAS 1026075-53-5)
- Timolol EP Impurity C (CAS 1391068-18-0)
- Timolol EP Impurity B（S-Isomer) (CAS 158636-96-5)
- Timolol EP Impurity H (CAS 158636-97-6)
- r-tImolol 2-butenedioate (CAS 1820576-27-9)
- Timolol Impurity 16 (CAS 214691-24-4)
- Timolol EP Impurity I (CAS 2469037-77-0)
- Timolol (CAS 26839-75-8)
Recommended Standards
- Trimetazidine EP Impurity F（Dihydrochloride） (CAS 113698-83-2)
- Bilastine impurity 106 (CAS CATO-C4X-2253106)
- Benzbromarone Impurity 20 (CAS 2514676-29-8)
- methyl 2-amino-3-nitropyridine-4-carboxylate (CAS 1803592-31-5)
- 2-(((6-(4-Methoxyphenyl)pyridazin-3-yl)thio)methyl)imidazo[1,2-a]pyridine (CAS 1207038-45-6)
- Dotinurad Impurity 146 (CAS CATO-C4X-2494146)
- 150705-88-7 CGP-49823 D0N1PA (CAS 150705-88-7)
- 6-Chloro-3,3-dimethyl-1H,2H,3H-pyrrolo[3,2-c]pyridin-2-one (CAS 1403899-43-3)
- 3,3-difluoro-4,4-dimethyl-pyrrolidine;hydrochloride (CAS 2253638-76-3)
- Allo-D-Ile17-Tirzepatide (CAS CATO-CPTD788962)
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