Crisaborole Impurity 44 CAS 90178-73-7
| CAS No. | 90178-73-7 |
| Molecular Formula | C14H11NO2 |
| Molecular Weight | 225.24 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C14H11NO2, Crisaborole Impurity 44 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 225.24 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).
Crisaborole Impurity 44 (CAS 90178-73-7), molecular formula C14H11NO2 and molecular weight 225.24 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures Crisaborole Impurity 44 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C14H11NO2 |
| Molecular Weight | 225.24 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| 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 |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1982 |
| Nitrogen Atoms | 1 |
Related Crisaborole Standards
- Crisaborole Impurity 6 (CAS 888967-63-3)
- Crisaborole Impurity 36 (CAS 90178-72-6)
- Crisaborole Impurity 6 (CAS 28547-28-6)
- Crisaborole Impurity 43 (CAS 58380-11-3)
- Crisaborole Impurity 44 (CAS 14348-38-0)
- Crisaborole Impurity 8 (CAS CATO-C4X-20218)
- Crisaborole impurity 161 (CAS CATO-C4X-2021161)
- Crisaborole Impurity 7 (CAS 2803552-55-6)
Recommended Standards
- Benzyln-[(2r)-2,3-dihydroxypropyl]carbamate (CAS 641617-22-3)
- Cyhalothrin Impurity 15 (CAS 71962-66-8)
- 9-Methyl-9H-carbazole-3-carboxylic acid (CAS 89374-79-8)
- Deltamethrin Related Compound 4 (CAS 61826-76-4)
- 1-(2,4-Dimethoxybenzyl)-1H-pyrazol-5-amine (CAS 1006463-92-8)
- Diethyl[(oxiran-2-yl)methyl]amine (CAS 2917-91-1)
- 5-(Piperidin-4-yl)-2-(trifluoromethyl)pyridine hydrochloride (CAS 2748377-52-6)
- (3-Bromophenyl)(2,3-dihydro-1,4-benzodioxin-6-yl)methanone (CAS 727419-55-8)
- Landiolol Impurity 28 (CAS CATO-C4X-262128)
- Nitroxoline-d4 (CAS 4008-48-4(unlabeled))
- Methyl 2-(4-Fluorophenyl)acetate (CAS 34837-84-8)
- 2-((4-(n-(5-Methylisoxazol-3-yl)sulfamoyl)phenyl)carbamoyl)benzoic acid (CAS 68274-44-2)
- (R)-morpholine-3-carboxamide hydrochloride (CAS 1867908-80-2)
- D-Pro37-Tirzepatide (CAS CATO-CPTD788902)
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 18665070610 / Nicole.chen@cato-chem.com