Crisaborole Impurity 40 CAS 13321-75-0
| CAS No. | 13321-75-0 |
| Molecular Formula | C7H6Br2O |
| Molecular Weight | 265.93 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Crisaborole Impurity 40 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.
Crisaborole Impurity 40 (CAS 13321-75-0) is a high-purity analytical reference standard with the molecular formula C7H6Br2O and a molecular weight of 265.93 g/mol.
Based on its molecular formula C7H6Br2O, Crisaborole Impurity 40 contains a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 265.93 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C7H6Br2O |
| Molecular Weight | 265.93 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1960 |
| Halogen Content | Br-containing |
Related Crisaborole Standards
- Crisaborole Impurity 39 (CAS 13321-76-1)
- Crisaborole lmpurity 70 (CAS CATO-C4X-202170)
- Crisaborole Impurity 66 (CAS 2247957-30-6)
- Crisaborole Impurity 54 (CAS 2990481-66-6)
- Crisaborole Impurity 140 (CAS CATO-C4X-2021140)
- Crisaborole Impurity 17 (CAS 1187188-59-5)
- Crisaborole Impurity 49 (CAS CATO-C4X-202149)
- Crisaborole Impurity 16 (CAS 906673-43-6)
Recommended Standards
- 4,5-Dibromo-2-cyclopropyl-1H-imidazole (CAS 1269233-20-6)
- 4-(Aminomethyl)-3,5-dibromopyridine (CAS 1265895-10-0)
- (4,6-Dibromopyridin-2-yl)methanamine (CAS 1393577-18-8)
- 3-Amino-2,6-dibromo-4-picoline (CAS 126354-83-4)
- N-Hydrazinocarbonylmethyl-2-trifluoromethyl-benzamide (CAS 887202-54-2)
- (R)-3-(3-fluoro-4-hydroxyphenyl)-5-(hydroxymethyl)oxazolidin-2-one (CAS 1025097-50-0)
- 2,4-Difluoro-6-methylbenzoyl chloride (CAS 1803813-12-8)
- 4-(Aminomethyl)-6-(difluoromethyl)-3-(trifluoromethyl)pyridine-2-sulfonyl chloride (CAS 1361887-11-7)
- 4-Chloro-1-trityl-1H-pyrrolo[2,3-b]pyridine-5-carboxylic acid (CAS 2448475-28-1)
- Mavatrep (CAS 956274-94-5)
- 2-Hydroxy-5-(3-hydroxypropyl)benzaldehyde (CAS 150994-02-8)
- N-(4-Butoxyphenyl)-2-(2-mercapto-4-oxo-4,5-dihydro-1,3-thiazol-5-yl)acetamide (CAS 1142206-89-0)
- 6,7-Dimethoxy-8-((6-methoxyisoquinolin-7-yl)oxy)isoquinoline (CAS 87179-86-0)
- D-Thr7-Tirzepatide (CAS CATO-CPTD788924)
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