Crisaborole Impurity 33 CAS 906673-45-8
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 906673-45-8 |
| Molecular Formula | C14H10BrNO2 |
| Molecular Weight | 304.14 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Crisaborole Impurity 33 (CAS 906673-45-8) is a high-purity pharmacopoeial impurity standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C14H10BrNO2. Molecular weight: 304.14 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C14H10BrNO2 |
| Molecular Weight | 304.14 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light |
| 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) | 10.0 |
| 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 102 (CAS CATO-C4X-2021102)
- Crisaborole impurity 112 (CAS CATO-C4X-2021112)
- Crisaborole Impurity 135 (CAS CATO-C4X-2021135)
- Crisaborole impurity 153 (CAS CATO-C4X-2021153)
- Crisaborole impurity 154 (CAS CATO-C4X-2021154)
- Crisaborole Impurity 23 (CAS CATO-C4X-202123)
- Crisaborole Impurity 24 (CAS CATO-C4X-202124)
- Crisaborole Impurity 25 (CAS CATO-C4X-202125)
Recommended Standards
- 6-(4-AMINOPHENYL)-3-BROMOPYRAZOLO[1,5-A]PYRIMIDIN-7-AMINE (CAS 1039364-84-5)
- N,N-Dimethyl-2-oxo-2-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-3-yl)acetamide (CAS 1071454-39-1)
- (4'-(Benzyloxy)-[1,1'-biphenyl]-4-yl)boronic acid (CAS 1207894-62-9)
- Crizotinib impurity 33 (CAS CATO-C4X-102533)
- Vinorelbine Impurity 17 (CAS CATO-C4X-264217)
- 5-Iodo-2-(methylthio)thiophene-3-carboxylic acid (CAS 78395-05-8)
- 4-(3-Oxo-3-phenyl-propionyl)-piperidine-1-carboxylic acid tert-butyl ester (CAS 1017781-53-1)
- 86322-73-8 CTK8G3048 Samarium(III) acetylacetonate hydrate (CAS 86322-73-8)
- 2-(3-Chloro-5-(trifluoromethoxy)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 1803320-97-9)
- Fragment-[9-31]-Semaglutide (CAS CATO-C4X-2226181)
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