Fluralaner Impurity 20 CAS CATO-C4X-218020
| CAS No. | CATO-C4X-218020 |
| Molecular Formula | C10H5Cl2F3O2 |
| Molecular Weight | 285.05 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Fluralaner Impurity 20.
CATO supplies Fluralaner Impurity 20 (CAS CATO-C4X-218020), a pharmacopoeial impurity reference standard (molecular formula C10H5Cl2F3O2, MW 285.05 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Fluralaner Impurity 20 (C10H5Cl2F3O2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 285.05 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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), Fluralaner Impurity 20 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 | C10H5Cl2F3O2 |
| Molecular Weight | 285.05 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F/Cl-containing |
Related Fluralaner Standards
- Fluralaner impurity 44 (CAS 1655515-91-5)
- Fluralaner Impurity 19 (CAS CATO-C4X-218019)
- Fluralaner impurity 45 (CAS CATO-C4X-218045)
- Fluralaner impurity 40 (CAS CATO-C4X-218040)
- Fluralaner Impurity 4 (mix TBC as stabilizer) (CAS 864725-22-4)
- Fluralaner Impurity 52 (CAS 1248658-92-5)
- Fluralaner Impurity 18 (CAS CATO-C4X-218018)
- Fluralaner Impurity 48 (CAS CATO-C4X-218048)
Recommended Standards
- 8-Bromo-4-hydroxy-3-nitroquinolin-2(1H)-one (CAS 54675-49-9)
- 1-(2-Bromoethoxy)-4-(trifluoromethoxy)benzene (CAS 102793-81-7)
- 6-Bromopyrazolo[1,5-a]pyridine-3,4-dicarboxylic acid (CAS 2767590-08-7)
- 1-(2-Bromo-5-methoxyphenyl)-2,2,2-trifluoroethan-1-ol (CAS 1033805-10-5)
- Pitavastatin Impurity 21 (CAS 154057-56-4)
- Cefuroxime Impurity 86 (CAS CATO-C4X-124586)
- Promethazine Impurity 37 (CAS CATO-C4X-141837)
- (Z)-3-Bromo-3-phenylacrylaldehyde (CAS 14804-59-2)
- Methyl 1-benzyl-5-methyl-1,2,5,6-tetrahydropyridine-3-carboxylate (CAS 1936608-56-8)
- 1-[(4-chlorophenyl)methyl]piperidin-4-amine (CAS 78471-44-0)
- 3-(2,4-Difluorophenyl)-2,2-dimethylpropan-1-ol (CAS 1479107-93-1)
- Tert-butyl 4-(3-(methoxycarbonyl)-4-nitrophenyl)piperazine-1-carboxylate (CAS 1135283-55-4)
- (s)-3-Amino-3-(5-methylthiophen-2-yl)propanoic acid (CAS 1270051-55-2)
- Semaglutide impurity 61 (CAS CATO-C4X-222661)
Why CATO?
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