Fluralaner impurity 32 CAS CATO-C4X-218032
| CAS No. | CATO-C4X-218032 |
| Molecular Formula | C18H13Cl2F3N2O3 |
| Molecular Weight | 433.21 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Fluralaner impurity 32 is closely related to a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Fluralaner impurity 32 (CAS CATO-C4X-218032) is a certified pharmaceutical impurity reference standard with the molecular formula C18H13Cl2F3N2O3 and a molecular weight of 433.21 g/mol.
The molecular framework of Fluralaner impurity 32 (C18H13Cl2F3N2O3) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
CATO manufactures Fluralaner impurity 32 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 | C18H13Cl2F3N2O3 |
| Molecular Weight | 433.21 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 2 |
Related Fluralaner Standards
- Fluralaner Impurity 23 (CAS CATO-C4X-218023)
- Fluralaner impurity 35 (CAS CATO-C4X-218035)
- Fluralaner impurity 36 (CAS CATO-C4X-218036)
- Fluralaner Impurity 53 (CAS CATO-C4X-218053)
- Fluralaner Impurity N1 (CAS 1095275-07-2)
- Fluralaner Impurity N3 (CAS 864725-61-1)
- Fluralaner Impurity 21 (CAS CATO-C4X-218021)
- Fluralaner Impurity 22 (CAS CATO-C4X-218022)
Recommended Standards
- 4-(2-(2-Bromo-4-nitrophenoxy)acetamido)benzene-1-sulfonyl fluoride (CAS 25299-92-7)
- Resmetirom Impurity 138 (CAS CATO-C4X-2912138)
- 1-{[3-chloro-5-(trifluoromethyl)pyridin-2-yl]amino}-3-cyanopropan-2-yl N-(4-chlorophenyl)carbamate (CAS 338399-88-5)
- Lamotrigine N2-Glucuronide (CAS 133310-19-7)
- Istradefylline Impurity 4 (CAS CATO-C4X-10614)
- Rosuvastatin Impurity 186 (CAS 61445-55-4)
- Lenvatinib Impurity 43 (CAS 1882873-21-3)
- Methyl 4-aminocyclohexane-1-carboxylate (CAS 175867-59-1)
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