Crisaborole lmpurity 68 CAS 943311-78-2
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 943311-78-2 |
| Molecular Formula | C19H18BrNO3 |
| Molecular Weight | 388.26 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Crisaborole lmpurity 68 (CAS 943311-78-2) is a pharmacopoeial impurity standards certified reference material from CATO. Molecular formula: C19H18BrNO3. Molecular weight: 388.26 g/mol. ISO 17034 accredited production ensures traceable purity and reliable analytical results.
Physical & Chemical Properties
| Molecular Formula | C19H18BrNO3 |
| Molecular Weight | 388.26 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
Related Crisaborole Standards
- Crisaborole Impurity 56 (CAS CATO-C4X-202156)
- Crisaborole impurity 119 (CAS CATO-C4X-2021119)
- Crisaborole Impurity 59 (CAS CATO-C4X-202159)
- Crisaborole impurity 106 (CAS CATO-C4X-2021106)
- Crisaborole impurity 107 (CAS CATO-C4X-2021107)
- Crisaborole impurity 114 (CAS CATO-C4X-2021114)
- Crisaborole impurity 122 (CAS CATO-C4X-2021122)
- Crisaborole Impurity 138 (CAS CATO-C4X-2021138)
Recommended Standards
- tert-Butyl(S)-3-(3-bromo-4-carbamoyl-5-(methylamino)-1h-pyrazol-1-yl)pyrrolidine-1-carboxylate (CAS 2173637-18-6)
- 2-(4-Bromophenyl)-4,6-diphenyl-1,3,5-triazine (CAS 23449-08-3)
- Di-tert-butyl (4-bromopyridine-2,6-diyl)dicarbamate (CAS 410534-47-3)
- Salbutamol Impurity 185 (CAS CATO-C4X-1176185)
- Amiodarone EP Impurity A (CAS 23551-25-9)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
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