Lambda-Cyhalothrin CAS 91465-08-6
| CAS No. | 91465-08-6 |
| Molecular Formula | C23H19ClF3NO3 |
| Molecular Weight | 449.85 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
Lambda-Cyhalothrin (CAS 91465-08-6) is a high-purity analytical reference standard with the molecular formula C23H19ClF3NO3 and a molecular weight of 449.85 g/mol.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution, Lambda-Cyhalothrin is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 449.85 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C23H19ClF3NO3 |
| Molecular Weight | 449.85 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | >95% |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1983 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 1 |
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Recommended Standards
- Cyhalothrin Impurity 5 (CAS 76703-63-4)
- Cyhalothrin (CAS 68085-85-8)
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- 5-Amino-4-bromo-2-(tert-butyl)phenol (CAS 873055-79-9)
- (2R,4S)-4-Aminopyrrolidine-2,4-dicarboxylic acid (CAS 171336-81-5)
- N-(2,4-Dimethoxybenzyl)cyclohexanamine hydrobromide (CAS 1609396-03-3)
- Memantine impurity 55 (CAS CATO-C4X-105855)
- (3α,5β,6α,7α)-6-Bromo-3-[(ethoxycarbonyl)oxy]-7-hydroxycholan-24-oic Acid Methyl Ester (CAS 125112-74-5)
- Mirabegron Impurity 32 (CAS 1310279-36-7 (free base))
- Semaglutide impurity 203 (CAS CATO-C4X-2226203)
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