Travoprost Impurity 56 CAS 105-36-2
| CAS No. | 105-36-2 |
| Molecular Formula | C4H7BrO2 |
| Molecular Weight | 167.00 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 167.00 g/mol gives Travoprost Impurity 56 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
As a process- or degradation-related impurity, Travoprost Impurity 56 (CAS 105-36-2, C4H7BrO2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Travoprost Impurity 56 (C4H7BrO2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution. Halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
As a certified reference material (CRM), Travoprost Impurity 56 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 | C4H7BrO2 |
| Molecular Weight | 167.00 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 1.0 |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Br-containing |
Related Travoprost Standards
- Travoprost Impurity 55 (CAS 75-03-6)
- Travoprost Impurity 36 Sodium Salt (CAS CATO-C4X-192536)
- Travoprost Impurity 6 (CAS 349-82-6)
- Travoprost Impurity 9 (CAS 22897-99-0)
- Travoprost Impurity 12 (CAS 39746-01-5)
- Travoprost Impurity 10 (CAS 2218532-66-0)
- Travoprost Impurity 51 (CAS CATO-C4X-192551)
- Travoprost Impurity 53 (CAS CATO-C4X-192553)
Recommended Standards
- Captopril EP Impurity D (CAS 56970-78-6)
- 1-Bromoethyl Acetate (CAS 40258-78-4)
- 4-Bromobutyric acid (CAS 2623-87-2)
- 2-Bromoethyl Acetate (CAS 927-68-4)
- All-rac-alfa-Tocopherol EP Impurity C (Mixture of Isomers) (CAS CATO-C4X-119519)
- Lansoprazole EP Impurity C/USP Impurity B (CAS 103577-40-8)
- Cefamandole Impurity 23 (CAS CATO-C4X-122123)
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- Stresscopin-Related Peptide (human) (CAS 348626-74-4)
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