Chlorothalonil Impurity 6 CAS 1786-86-3
| CAS No. | 1786-86-3 |
| Molecular Formula | C8H4Cl4N2O2 |
| Molecular Weight | 301.94 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| 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 Chlorothalonil Impurity 6.
CATO supplies Chlorothalonil Impurity 6 (CAS 1786-86-3), a certified reference material (molecular formula C8H4Cl4N2O2, MW 301.94 g/mol) for analytical method development and quality control.
Structurally, Chlorothalonil Impurity 6 (C8H4Cl4N2O2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. 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 301.94 g/mol, it falls into the moderately-high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
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 | C8H4Cl4N2O2 |
| Molecular Weight | 301.94 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chlorothalonil Standards
Recommended Standards
- 2,3,5,6-Tetrachloroterephthalamide (CAS 1786-85-2)
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- 3-Bromo-2-fluoro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine (CAS 1150561-78-6)
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- 2-((2,6-Dichlorobenzyl)thio)-6-(4-methoxyphenyl)-[1,2,4]triazolo[1,5-a]pyrimidin-7-amine (CAS 338403-86-4)
- 2-(4-Aminophenoxy)-N-(2,6-dimethylphenyl)acetamide (CAS 857496-52-7)
- 3-(3-((S)-6-(((S)-1-(Cyclobutylamino)-3-(1H-indol-3-yl)-1-oxopropan-2-yl)amino)-5-((3-fluorophenyl)sulfonamido)-6-oxohexyl)thioureido)propanoic acid (CAS 2166487-21-2)
- Hexapeptide-11 (CAS 161258-30-6)
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