5-(2-chlorophenyl)-1-phenyl-1H-pyrazole-3-carboxylic acid CAS 55042-89-2
| CAS No. | 55042-89-2 |
| Molecular Formula | C16H11ClN2O2 |
| Molecular Weight | 298.72 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 5-(2-chlorophenyl)-1-phenyl-1H-pyrazole-3-carboxylic acid is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 5-(2-chlorophenyl)-1-phenyl-1H-pyrazole-3-carboxylic acid (CAS 55042-89-2), a certified reference material (molecular formula C16H11ClN2O2, MW 298.72 g/mol) for analytical method development and quality control.
5-(2-chlorophenyl)-1-phenyl-1H-pyrazole-3-carboxylic acid (C16H11ClN2O2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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 5-(2-chlorophenyl)-1-phenyl-1H-pyrazole-3-carboxylic acid 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 | C16H11ClN2O2 |
| Molecular Weight | 298.72 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, 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; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1972 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related chlorophenyl Standards
- 1-(2-Chlorophenyl)-5-phenyl-1H-pyrazole-3-carboxylic acid (CAS 116572-69-1)
- 1-(2-Chlorophenyl)-5-phenyl-1h-pyrazole-4-carboxylic acid (CAS 1171970-88-9)
- 5-(4-Chlorophenyl)-1-phenyl-1H-pyrazole-3-carboxylic acid (CAS 167873-90-7)
- (1-(4-Chlorophenyl)-1H-pyrazol-4-yl)(2-hydroxyphenyl)methanone (CAS 61466-47-5)
- (2Z)-2-[(4-Chlorophenyl)imino]-2H-chromene-3-carboxamide (CAS 314048-22-1)
- (4Z)-4-{[(4-chlorophenyl)amino]methylidene}-3-phenyl-4,5-dihydro-1,2-oxazol-5-one (CAS 477851-18-6)
- (E)-3-(5-(4-chlorophenyl)furan-2-yl)-1-(furan-2-yl)prop-2-en-1-one (CAS 20005-35-0)
- (E)-4-(((3-Chlorophenyl)amino)methylene)-2-phenyloxazol-5(4H)-one (CAS 313971-65-2)
Recommended Standards
- 4-[4-(4-Chlorophenyl)-1H-pyrazol-1-yl]benzoic acid (CAS 871366-56-2)
- 5-(3-Chlorophenyl)-1-hydroxy-3-phenylpyrazin-2(1H)-one (CAS 339030-55-6)
- 3-(Benzo[d][1,3]dioxol-5-yl)-5-(4-chlorophenyl)-1H-pyrazole (CAS 651717-17-8)
- 5-(4-Chlorophenyl)-1-hydroxy-3-phenylpyrazin-2(1H)-one (CAS 400086-54-6)
- 2-(3-(Pyrrolidin-3-yl)-1H-pyrazol-5-yl)ethan-1-ol dihydrochloride (CAS 1452555-93-9)
- 1171465-55-6 4-{[5-(4-Fluorophenyl)-4-methyl-1,1-dioxido-3-oxoisothiazol-2(3H)-yl]methyl}benzoic acid MFCD14282142 (CAS 1171465-55-6)
- 1-(Benzenesulfonyl)-4-(tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrrolo[2,3-b]pyridine (CAS 942919-24-6)
- 2-((((9h-Fluoren-9-yl)methoxy)carbonyl)amino)-3-(4-fluoro-1h-indol-3-yl)propanoic acid (CAS 1313032-67-5)
- 2,4-DIFLUORO-1-ISOCYANATOBENZENE 2,4-DIFLUOROISOCYANATOBENZENE 2,4-DIFLUOROPHENYL ISOCYANATE 59025-55-7 AS04328 ISOCYANIC ACID 2,4-DIFLUOROPHENYL ESTER OTAVA-BB 1055606 TIMTEC-BB SBB006537 (CAS 59025-55-7)
- Ethyl 2-((4-chloro-6-(propylamino)-1,3,5-triazin-2-yl)amino)acetate (CAS 6507-20-6)
- 4-{[(4-chlorophenyl)sulfanyl]methyl}-6-(piperidin-1-yl)-2-(pyridin-2-yl)pyrimidine (CAS 477866-90-3)
- 6-ethoxypyrazin-2-amine (CAS 54015-49-5)
- 4-fluoro-5-(tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-amine (CAS 944401-71-2)
- Pheromone Biosynthesis Activating Neuropeptide (Helicoverpa assulta, Heliothis zea) (CAS 122071-54-9)
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