3-Chloro-5-(4-chlorophenyl)-4-(4-fluorophenyl)-6-methylpyridazine CAS 2034157-25-8
| CAS No. | 2034157-25-8 |
| Molecular Formula | C17H11Cl2FN2 |
| Molecular Weight | 333.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 3-Chloro-5-(4-chlorophenyl)-4-(4-fluorophenyl)-6-methylpyridazine 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.
3-Chloro-5-(4-chlorophenyl)-4-(4-fluorophenyl)-6-methylpyridazine (CAS 2034157-25-8), molecular formula C17H11Cl2FN2 and molecular weight 333.19 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 3-Chloro-5-(4-chlorophenyl)-4-(4-fluorophenyl)-6-methylpyridazine (C17H11Cl2FN2) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, fluorine/chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 12.0, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 333.19 g/mol, it falls into the moderately-high-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
Physical & Chemical Properties
| Molecular Formula | C17H11Cl2FN2 |
| Molecular Weight | 333.19 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 2 |
Related Chloro Standards
- (5-Chloro-1-methyl-3-phenyl-1H-pyrazol-4-yl)(4-chlorophenyl)methanol (CAS 956507-62-3)
- 2-Chloro-N-[(E)-2-[3-chloro-5-(trifluoromethyl)pyridin-2-yl]ethenyl]aniline (CAS 1164523-95-8)
- 3-Chloro-N-[(E)-2-[3-chloro-5-(trifluoromethyl)pyridin-2-yl]ethenyl]aniline (CAS 303997-77-5)
- 4-Chloro-6-[(4-chlorophenyl)sulfanyl]-3-phenylpyridazine (CAS 477872-26-7)
- 4-Chloro-N-[(E)-2-[3-chloro-5-(trifluoromethyl)pyridin-2-yl]ethenyl]aniline (CAS 338978-19-1)
- 1-Chloro-4-{[(4-chlorophenyl)sulfanyl]methanesulfonyl}benzene (CAS 59662-66-7)
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- 2-Chloro-1-(8-chloro-6-(trifluoromethyl)imidazo[1,2-a]pyridin-3-yl)-2,2-difluoroethan-1-one (CAS 1823183-01-2)
Recommended Standards
- 2-[(2,5-Dichloro-4-pyrimidinyl)amino]-N-methylbenzenesulfonamide (CAS 761440-11-3)
- 5-(((2,4-Dichlorophenyl)thio)methylene)-2,2-dimethyl-1,3-dioxane-4,6-dione (CAS 477866-35-6)
- 2-((6,8-Dichloro-3-ethyl-4-oxo-3,4-dihydroquinazolin-2-yl)thio)acetic acid (CAS 886500-42-1)
- Tienilic Acid Impurity 2 (CAS 55901-78-5)
- 1H-indole-2,3-dione, 5-bromo-6-iodo- (CAS 63037-67-2)
- Dicyclohexylamine (S)-2-((tert-butoxycarbonyl)amino)pentanoate (CAS 67861-96-5)
- 2-[(4-hydroxyphenyl)methylidene]propanedinitrile (CAS 3785-90-8)
- ((3S,4R)-4-(4-Chlorophenyl)pyrrolidin-3-yl)methanol hydrochloride (CAS 1217780-42-1)
- (2S)-2-(aminomethyl)-3-methyl-butanoic acid;hydrochloride (2S)-2-(aminomethyl)-3-methyl-butyric acid;hydrochloride (2S)-2-(aminomethyl)-3-methylbutanoic acid;hydrochloride (S)-2-(aminomethyl)-3-methylbutanoic acid-HCl 925704-47-8 (CAS 925704-47-8)
- 5,7,2’,6’-Tetrahydroxyflavone (CAS 82475-00-1)
- 3β,6β-Chlorogenin (CAS 41743-71-9)
- Methyl 4-(1-hydroxypropyl)-1-methyl-1H-pyrrole-2-carboxylate (CAS 1135283-27-0)
- 2-Bromo-8-(2,3,4-trifluorophenoxy)-5,6,7,8-tetrahydro-[1,2,4]triazolo[1,5-a]pyridine (CAS 2443488-25-1)
- Semaglutide impurity 28 (CAS CATO-C4X-222628)
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