Crisaborole lmpurity 97 CAS CATO-C4X-202197
| CAS No. | CATO-C4X-202197 |
| Molecular Formula | C22H26BNO6 |
| Molecular Weight | 411.26 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Crisaborole lmpurity 97 is closely related to a flavonoid core, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Crisaborole lmpurity 97 (CAS CATO-C4X-202197) is a certified pharmaceutical impurity reference standard with the molecular formula C22H26BNO6 and a molecular weight of 411.26 g/mol.
Based on its molecular formula C22H26BNO6, Crisaborole lmpurity 97 contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 411.26 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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), Crisaborole lmpurity 97 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 | C22H26BNO6 |
| Molecular Weight | 411.26 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 95% |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 10.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Crisaborole Standards
- Crisaborole Impurity 137 (CAS CATO-C4X-2021137)
- Crisaborole Impurity 20 (CAS CATO-C4X-202120)
- Crisaborole lmpurity 74 (CAS CATO-C4X-202174)
- Crisaborole lmpurity 75 (CAS CATO-C4X-202175)
- Crisaborole impurity 110 (CAS CATO-C4X-2021110)
- Crisaborole Impurity 21 (CAS CATO-C4X-202121)
- Crisaborole impurity 106 (CAS CATO-C4X-2021106)
- Crisaborole impurity 107 (CAS CATO-C4X-2021107)
Recommended Standards
- N-(3,4-Dichlorophenyl)-2-(4-fluorophenyl)quinoline-4-carboxamide (CAS 337924-66-0)
- 5-Bromo-2-(dimethoxymethyl)-1-(phenylsulfonyl)-1H-pyrrolo[2,3-b]pyridine (CAS 1261365-83-6)
- Methyl 3-(((benzyloxy)carbonyl)amino)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzoate (CAS 2296676-80-5)
- 1-(2,4-Dichlorobenzenesulfonyl)-5-[2-(1H-1,2,4-triazol-1-yl)propan-2-yl]-1H-pyrazole-4-carbonitrile (CAS 318469-20-4)
- Pidotimod Impurity N9 (CAS 14842-41-2)
- Difelikefalin Impurity 93 (CAS CATO-C4X-304193)
- Aripiprazole Impurity 79 (CAS CATO-C4X-100879)
- Methyl 3-(4-bromo-1-tosyl-1H-indol-3-yl)acrylate (CAS 90481-80-4)
- 3-Amino-3-(2-chlorophenyl)propan-1-ol (CAS 21464-51-7)
- (Benzo[4,5]furo[3,2-d]pyrimidin-4-ylamino)-acetic acid (CAS 326009-17-0)
- Methyl-n-butylsulfide (CAS 628-29-5)
- 4,6-Dimorpholinopyrimidine-5-carbaldehyde (CAS 304864-80-0)
- 5-(1-Aminoethyl)-3-methyl-N-phenylpyridin-2-amine (CAS 1355215-84-7)
- Osteoblast Activating Peptide (mouse, rat) (H-7262.0500) (CAS 1222950-80-2)
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