Bosentan Impurity 20 CAS CATO-C4X-156420
| CAS No. | CATO-C4X-156420 |
| Molecular Formula | C9H8N4O3 |
| Molecular Weight | 220.18 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 220.18 g/mol gives Bosentan Impurity 20 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Bosentan Impurity 20 (CAS CATO-C4X-156420) is a certified pharmaceutical impurity reference standard with the molecular formula C9H8N4O3 and a molecular weight of 220.18 g/mol.
The molecular framework of Bosentan Impurity 20 (C9H8N4O3) is characterized by an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
As a certified reference material (CRM), Bosentan Impurity 20 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 | C9H8N4O3 |
| Molecular Weight | 220.18 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (faint amine-like odor) |
| Purity | ≥95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| 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 |
| Nitrogen Atoms | 4 |
Related Bosentan Standards
- Bosentan Impurity 21 (CAS CATO-C4X-156421)
- Bosentan Impurity 5 (CAS 193013-72-8)
- Bosentan USP Related Compound E (CAS 6292-59-7)
- Bosentan Impurity 19 (CAS 20730-58-9)
- Bosentan Impurity 19 (CAS CATO-C4X-156419)
- Bosentan Impurity N8 (CAS 329923-15-1)
- Bosentan Impurity 8 (CAS 150728-12-4)
- Bosentan Impurity 22 (CAS CATO-C4X-156422)
Recommended Standards
- Azilsartan Impurity 60 (CAS CATO-C4X-109660)
- Cytarabine Impurity 24 (CAS CATO-C4X-200524)
- 938458-79-8 4-(2,4-Dioxoimidazolidin-1-yl)benzoic acid DTXSID00650781 (CAS 938458-79-8)
- Cytarabine Impurity 26 (CAS CATO-C4X-200526)
- Cilastatin Impurity 15 Sodium salt (CAS CATO-C4X-196015)
- Anastrozole Impurity 30 (CAS CATO-C4X-123930)
- Salbutamol EP Impurity M(Formic Acid) (CAS CATO-C4X-117631)
- 2-Bromo-N-(4-ethylphenyl)propanamide (CAS 89312-73-2)
- Lithium hexafluorosilicate (CAS 17347-95-4)
- trans-4-[2-Oxo-2-(2-nitrophenyl)ethyl]-cyclohexane-1-carboxylic acid (CAS 736136-65-5)
- 4-Fluoro-3-(5-((2-methyl-1H-imidazol-1-yl)methyl)-1,2,4-oxadiazol-3-yl)benzaldehyde (CAS 1258652-78-6)
- 1-(3,4-Dichlorobenzyl)-3,5-dimethyl-1h-pyrazol-4-amine (CAS 514800-76-1)
- 3-Bromo-2,6-dimethoxypyridine (CAS 13445-16-4)
- Liraglutide Impurity 14 TFA Salt (CAS CATO-C4X-199214)
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