Crisaborole Impurity 140 CAS CATO-C4X-2021140
| CAS No. | CATO-C4X-2021140 |
| Molecular Formula | C14H12BNO4 |
| Molecular Weight | 269.06 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C14H12BNO4, Crisaborole Impurity 140 contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 269.06 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Crisaborole Impurity 140 (CAS CATO-C4X-2021140) is a certified pharmaceutical impurity reference standard with the molecular formula C14H12BNO4 and a molecular weight of 269.06 g/mol.
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), Crisaborole Impurity 140 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 | C14H12BNO4 |
| Molecular Weight | 269.06 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, 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; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 9.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Crisaborole Standards
- Crisaborole Impurity 17 (CAS 1187188-59-5)
- Crisaborole Impurity 49 (CAS CATO-C4X-202149)
- Crisaborole Impurity 16 (CAS 906673-43-6)
- Crisaborole Impurity 54 (CAS 2990481-66-6)
- Crisaborole Impurity 66 (CAS 2247957-30-6)
- Crisaborole Impurity 40 (CAS 13321-75-0)
- Crisaborole Impurity 39 (CAS 13321-76-1)
- Crisaborole lmpurity 70 (CAS CATO-C4X-202170)
Recommended Standards
- 261951-89-7 4 - Methoxy - 3 - (trifluoromethyl)benzyl bromide 4-(bromomethyl)-1-methoxy-2-(trifluoromethyl)benzene 4-(bromomethyl)-2-(trifluoromethyl)phenyl methyl ether 4-Bromomethyl-1-methoxy-2-trifluoromethyl-benzene benzene, 4-(bromomethyl)-1-methoxy-2-(trifluoromethyl)- (CAS 261951-89-7)
- N-(5-Iodo-1,3,4-thiadiazol-2-yl)acetamide (CAS 39719-88-5)
- Methyl 4-iodo-1,2-thiazole-3-carboxylate (CAS 397329-61-2)
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- 3-Hydroxybenzo[b]thiophene-2-carbonitrile (CAS 57477-69-7)
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- 2-((2-(4-Bromophenyl)-1h-indol-3-yl)thio)ethan-1-amine (CAS 887202-13-3)
- Ethyl (1-(pyrimidin-2-ylthio)-2,3-dihydro-1H-inden-2-yl)carbamate (CAS 306978-22-3)
- Myristoyl Pentapeptide -4 acetate (CAS 959610-30-1(free base))
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