7-Chloro-2-(4-fluorophenyl)-2H-pyrazolo[3,4-d]pyridazine CAS 1956376-33-2
| CAS No. | 1956376-33-2 |
| Molecular Formula | C11H6ClFN4 |
| Molecular Weight | 248.64 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.
CATO supplies 7-Chloro-2-(4-fluorophenyl)-2H-pyrazolo[3,4-d]pyridazine (CAS 1956376-33-2), a certified reference material (molecular formula C11H6ClFN4, MW 248.64 g/mol) for analytical method development and quality control.
Based on its molecular formula C11H6ClFN4, 7-Chloro-2-(4-fluorophenyl)-2H-pyrazolo[3,4-d]pyridazine contains a nitrogen-containing heterocyclic scaffold, a nitrile group, fluorine/chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 248.64 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 | C11H6ClFN4 |
| Molecular Weight | 248.64 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 4 |
Related Chloro Standards
- 6-Chloro-3-(4-fluorophenyl)-[1,2,4]triazolo[4,3-b]pyridazine (CAS 1094260-22-6)
- 6-Chloro-3-(2-fluorophenyl)-[1,2,4]triazolo[4,3-b]pyridazine (CAS 1094354-48-9)
- 6-Chloro-3-(3-fluorophenyl)[1,2,4]triazolo[4,3-b]pyridazine (CAS 1094425-19-0)
- 3-Chloro-6-(4-fluorophenyl)-[1,2,4]triazolo[4,3-b]pyridazine (CAS 1116743-29-3)
- 2-(2-Chloro-4-fluorophenoxy)nicotinonitrile (CAS 1183594-45-7)
- 6-Chloro-5-fluoro-2-(pyrazin-2-yl)-1H-benzo[d]imidazole (CAS 1257535-23-1)
- 5-Chloro-2-(2-fluorophenyl)oxazolo[5,4-b]pyridine (CAS 126921-80-0)
- 4-Chloro-1-(3-fluorophenyl)-1H-pyrazolo[3,4-d]pyrimidine (CAS 1269702-96-6)
Recommended Standards
- 4-Chloro-6-(4-fluorophenyl)-[1,2,3]triazolo[1,5-a]pyrazine (CAS 1708428-31-2)
- 7-Chloro-2-(3-fluorophenyl)-2H-pyrazolo[3,4-d]pyridazine (CAS 1956379-51-3)
- 2-Chloro-6-(3-fluorophenoxy)isonicotinonitrile (CAS 1549211-92-8)
- 2-(2-Chloro-6-fluorophenyl)oxazolo[4,5-b]pyridine (CAS 52333-55-8)
- 6,6-difluoro-1,4-diazepane;dihydrobromide (CAS 529509-60-2)
- 1-(3-cyano-6-methylpyridin-2-yl)piperidine-3-carboxylic acid (CAS 1281624-81-4)
- Methyl (E)-2-(3-(dimethylamino)acryloyl)octanoate (CAS 866133-90-6)
- 3-Bromo-3,5-dimethyl-4-methoxybenzophenone (CAS 844879-47-6)
- 2-(1h-1,2,4-Triazol-1-yl)-5-(trifluoromethyl)benzonitrile (CAS 1094368-55-4)
- PF-06827443, 98% (HPLC) (CAS 2115022-67-6)
- Ethyl 6-methyl-1-oxaspiro[2.5]Octane-2-carboxylate (CAS 73040-03-6)
- 3-(Chloromethyl)-5-(thiophen-2-yl)-1,2-oxazole (CAS 863669-57-2)
- 4-Bromo-5-isopropylpyrazole (CAS 60061-60-1)
- Neuropeptide K (human, porcine, rat) trifluoroacetate salt (CAS 96827-05-3)
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