4-(2-Chlorophenyl)-2-phenyl-1,2-dihydro-3H-pyrazol-3-one CAS 477858-99-4
| CAS No. | 477858-99-4 |
| Molecular Formula | C15H11ClN2O |
| Molecular Weight | 270.71 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-(2-Chlorophenyl)-2-phenyl-1,2-dihydro-3H-pyrazol-3-one (CAS 477858-99-4) is a high-purity analytical reference standard with the molecular formula C15H11ClN2O and a molecular weight of 270.71 g/mol.
Based on its molecular formula C15H11ClN2O, 4-(2-Chlorophenyl)-2-phenyl-1,2-dihydro-3H-pyrazol-3-one contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 270.71 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 4-(2-Chlorophenyl)-2-phenyl-1,2-dihydro-3H-pyrazol-3-one under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C15H11ClN2O |
| Molecular Weight | 270.71 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chlorophenyl Standards
- 2-(3-Chlorophenyl)-5-phenyl-2,4-dihydro-3H-pyrazol-3-one (CAS 108124-77-2)
- 4-(4-(2-Chlorophenyl)oxazol-2-yl)aniline (CAS 1211594-43-2)
- (3E)-3-[(3-Chlorophenyl)methylidene]-3,4-dihydro-2H-1-benzopyran-4-one (CAS 1262616-91-0)
- (3E)-3-[(2-Chlorophenyl)methylidene]-3,4-dihydro-2H-1-benzopyran-4-one (CAS 1333395-36-0)
- N-(4-Chlorophenyl)-1H-indole-6-carboxamide (CAS 1455510-82-3)
- 3-(3-Chlorophenyl)-4-phenylfuran-2(5H)-one (CAS 1713463-32-1)
- 3-(4-Chlorophenyl)-2-methyl-3,4-dihydroquinazolin-4-one (CAS 1788-93-8)
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Recommended Standards
- 4-(2-(4-Chlorophenyl)oxazol-5-yl)aniline (CAS 89752-97-6)
- 4-(3-Chlorophenyl)-2-phenyl-1,2-dihydro-3H-pyrazol-3-one (CAS 64123-84-8)
- 3'-Fluoro-[1,1'-biphenyl]-4-sulfonyl chloride (CAS 939761-07-6)
- 4-(4-Chlorobenzyl)phthalazin-1-ol (CAS 5411-79-0)
- Boc-NH-PEG2-CH2CH2COOH (CAS 1365655-91-9)
- 3-(Quinoxalin-2-yl)acrylic acid (CAS 1593-24-4)
- 3-Chloro-N-((methylcarbamoyl)carbamothioyl)benzamide (CAS 306976-43-2)
- Dicyclohexyl(2',4',6'-trimethyl-[1,1'-biphenyl]-2-yl)phosphine (CAS 298205-50-2)
- 1-(2-Nitrophenyl)butane-1,3-dione (CAS 5463-78-5)
- Hydralazine N-oxide (CAS 18636-89-0)
- 3-methoxy-4-nitro-1-oxido-pyridin-1-ium (CAS 19355-04-5)
- 2-(2-Heptynylthio)-phenol Acetate (CAS 209125-28-0)
- 5-bromo-2-methyl-[1,2,4]triazolo[1,5-a]pyridine (CAS 1159813-10-1)
- (Tyr?)-C-Peptide (dog) (CAS 101135-67-5)
Why CATO?
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