2-Chloro-1-(1-phenyl-1h-pyrazol-4-yl)ethan-1-one CAS 1152595-86-2
| CAS No. | 1152595-86-2 |
| Molecular Formula | C11H9ClN2O |
| Molecular Weight | 220.65 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-Chloro-1-(1-phenyl-1h-pyrazol-4-yl)ethan-1-one (CAS 1152595-86-2) is a high-purity analytical reference standard with the molecular formula C11H9ClN2O and a molecular weight of 220.65 g/mol.
2-Chloro-1-(1-phenyl-1h-pyrazol-4-yl)ethan-1-one (C11H9ClN2O) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
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 | C11H9ClN2O |
| Molecular Weight | 220.65 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chloro Standards
- 1-(3-Chloro-4-(1h-imidazol-1-yl)phenyl)ethan-1-one (CAS 100479-59-2)
- 3-Chloro-6,7,8,9-tetrahydro-5H-pyrido[2,3-b]indol-5-one (CAS 1005498-46-3)
- 1-(2-Chloro-4-(1h-pyrazol-1-yl)phenyl)ethan-1-one (CAS 1022154-85-3)
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- 5-(2-Chloro-4-methylphenyl)pyrimidin-2-ol (CAS 1111107-98-2)
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Recommended Standards
- 1-(4-chlorophenyl)-3-methyl-1H-pyrazole-4-carbaldehyde (CAS 1152543-59-3)
- 4-Chloro-2-(2-methoxyphenyl)pyrimidine (CAS 1155594-52-7)
- 3-(2-Chlorophenyl)-1-methyl-1h-pyrazole-4-carbaldehyde (CAS 1152508-67-2)
- 4-Chloro-2-(3-methoxyphenyl)pyrimidine (CAS 1156238-51-5)
- 5-Hexyl-4H-thieno[3,4-c]pyrrole-4,6(5H)-dione (CAS 566939-54-6)
- 5-Amino-4-methyl-1H-indazole (CAS 101257-89-0)
- Dl-Thyronine (CAS 1034-10-2)
- 4-Bromo-2-(2-methylthiazol-4-yl)phenol (CAS 1387566-00-8)
- Semaglutide Impurity 164 (CAS CATO-C4X-2226164)
- Ethyl 2-Chloro-4,6-dihydroxynicotinate (CAS 70180-38-0)
- 5-Chloro-6H-anthra[1,9-cd]isoxazol-6-one (CAS 70730-92-6)
- 1-Cyclopropyl-2-((3,4-dichlorophenyl)thio)ethan-1-one (CAS 1478844-83-5)
- 6-Benzyl-4,5,6,7-tetrahydrofuro[2,3-c]pyridine-2-carbaldehyde (CAS 1194374-62-3)
- Cholecystokinin Octapeptide (1-5) (desulfated) (CAS 121880-96-4)
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