Fluralaner Impurity 57 CAS 1122021-93-5
| CAS No. | 1122021-93-5 |
| Molecular Formula | C22H16Cl2F7N3O3 |
| Molecular Weight | 574.28 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Fluralaner Impurity 57 (CAS 1122021-93-5) is a certified pharmaceutical impurity reference standard with the molecular formula C22H16Cl2F7N3O3 and a molecular weight of 574.28 g/mol.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution, Fluralaner Impurity 57 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 574.28 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C22H16Cl2F7N3O3 |
| Molecular Weight | 574.28 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 3 |
Related Fluralaner Standards
- Fluralaner-d5-15N (CAS CATO-C4X-21802)
- Fluralaner-d5 (CAS CATO-C4X-21803)
- Fluralaner-13C2-d2-15N (CAS CATO-C4X-21801)
- Fluralaner Impurity 64 (CAS 2556570-87-5)
- Fluralaner-D4 (CAS CATO-CCAD304136)
- Fluralaner impurity 30 (CAS CATO-C4X-218030)
- Fluralaner Impurity 51 (CAS 1215216-63-9)
- (S)-Fluralaner (CAS 1122022-02-9)
Recommended Standards
- Macitentan Impurity 2 (CAS 441796-13-0)
- N-(4,5-Dibromo-2-([(4-methylphenyl)sulfonyl]amino)phenyl)-4-methylbenzenesulfonamide (CAS 88617-67-8)
- 3,3'-Diiodo-2,2'-dimethoxy-5,5',6,6',7,7',8,8'-octahydro-1,1'-binaphthalene (CAS 400027-47-6)
- Thymectacin - API Standards (CAS 232925-18-7)
- Topiroxostat Impurity 66 (CAS 159890-49-0)
- Oxolinic Acid EP Impurity C (CAS 14205-66-4)
- (E)-Ceftizoxime Impurity 1 (CAS 68403-31-6)
- (S)-2-Acetamido-3-methyl-3-(nitrosothio)butanoic acid (CAS 79032-48-7)
- Phloroglucinol impurity 54 (CAS CATO-C4X-221754)
- N-Succinimidyl-(4-bromoacetamido)benzoate (CAS 94987-16-3)
- (3-methylthiophen-2-yl)boronic acid (CAS 177735-09-0)
- 4-Methyl-2-propanamido-1,3-thiazole-5-sulfonyl chloride (CAS 1291490-19-1)
- 1-(6-Bromochroman-2-yl)ethanone (CAS 1895167-20-0)
- 3AEEA-Semaglutide(Endo-AEEA-Semaglutide) (CAS CATO-C4X-2226265)
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