Crisaborole Impurity 4 CAS 403-54-3
Purity 97%+In StockPharmacopoeial Impurity Standards
| CAS No. | 403-54-3 |
| Molecular Formula | C7H4FN |
| Molecular Weight | 121.11 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Crisaborole Impurity 4 (CAS 403-54-3), a pharmacopoeial impurity standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C7H4FN. Molecular weight: 121.11 g/mol. Batch-specific COA and technical support are available on request.
Physical & Chemical Properties
| Molecular Formula | C7H4FN |
| Molecular Weight | 121.11 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
Related Crisaborole Standards
- Crisaborole Impurity 3 (CAS 394-47-8)
- Crisaborole Impurity 46 (CAS 1194-02-1)
- Crisaborole Impurity 63 (CAS 7070-85-1)
- Crisaborole Impurity 1 (CAS 20035-32-9)
- Crisaborole Impurity 2 (CAS 196081-71-7)
- Crisaborole Impurity 45 (CAS 2973-80-0)
- Crisaborole Impurity 48 (CAS 22532-61-2)
- Crisaborole Impurity 18 (CAS 2737-20-4)
Recommended Standards
- 34069-57-3 4-amino-2-fluorobutanoic acid 4-azanyl-2-fluoranyl-butanoic acid A822061 (CAS 34069-57-3)
- Vericiguat Impurity 5 (CAS CATO-C4X-28965)
- 5-Ethynyl-2-fluoropyridine (CAS 853909-08-7)
- Topiroxostat impurity 77 (CAS 103275-78-1)
- Cefoperazone Impurity 67 (CAS CATO-C4X-114967)
- 2-(2-Aminothiazol-4-yl)benzoic acid (CAS 748121-40-6)
- N-(3-Amino-4-chlorophenyl)-2-(2,4-dichlorophenoxy)acetamide (CAS 1020058-38-1)
- Methyl 6-bromo-2-cyclopentyl-2H-indazole-4-carboxylate (CAS 2070014-74-1)
- 1-{4,8-diazatricyclo[5.2.2.0^{2,6}]undecan-8-yl}-2,2,2-trifluoroethan-1-one hydrochloride (CAS 2044902-17-0)
- [His]1+12-Semaglutide (CAS CATO-C4X-2226178)
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 13829788188 / jacky.chen@cato-chem.com