2-(3-(4-Chlorophenyl)-1-(m-tolyl)-1H-pyrazol-4-yl)acetic acid CAS 55432-13-8
| CAS No. | 55432-13-8 |
| Molecular Formula | C18H15ClN2O2 |
| Molecular Weight | 326.78 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 2-(3-(4-Chlorophenyl)-1-(m-tolyl)-1H-pyrazol-4-yl)acetic acid (C18H15ClN2O2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, 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 326.78 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.
CATO supplies 2-(3-(4-Chlorophenyl)-1-(m-tolyl)-1H-pyrazol-4-yl)acetic acid (CAS 55432-13-8), a certified reference material (molecular formula C18H15ClN2O2, MW 326.78 g/mol) for analytical method development and quality control.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C18H15ClN2O2 |
| Molecular Weight | 326.78 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 |
| 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
- 3-(3-(4-Chlorophenyl)-1-phenyl-1H-pyrazol-4-yl)propanoic acid (CAS 108446-79-3)
- Methyl 3-(4-Chlorophenyl)-1-m-tolyl-1H-pyrazole-5-carboxylate (CAS 1202031-50-2)
- Methyl 5-(4-chlorophenyl)-1-(4-methylphenyl)-1H-pyrazole-3-carboxylate (CAS 158941-37-8)
- (2E)-1-[3-(4-Chlorophenyl)-2,1-benzoxazol-5-yl]-3-(dimethylamino)prop-2-en-1-one (CAS 337920-27-1)
- (3-(2-Chlorophenyl)-5-methylisoxazol-4-yl)-N-benzylformamide (CAS 300377-64-4)
- 1-((3-(4-Chlorophenyl)-2-hydroxynaphthalen-1-yl)methyl)urea (CAS 901762-40-1)
- 1-(2-Chlorophenyl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylic acid (CAS 449797-42-6)
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Recommended Standards
- 1-(4-Chlorophenyl)-5-methyl-N-(p-tolyl)-1H-1,2,4-triazole-3-carboxamide (CAS 321431-25-8)
- 2-(4-(6-Chloropyridin-2-yl)piperazin-1-yl)-1-(4-hydroxyisoxazolidin-2-yl)ethan-1-one (CAS 344276-42-2)
- 2-(4-Chlorophenyl)-6,6-dimethyl-4,8-dioxospiro[2.5]octane-1,1-dicarbonitrile (CAS 477890-29-2)
- 2-(4-Chlorophenyl)-N,N-dimethyl-1-oxo-1,2-dihydroisoquinoline-4-carboxamide (CAS 477850-74-1)
- 5-(3-Methoxyphenyl)-3-methylpyrazolo[1,5-a]pyrimidine-7-carboxylic acid (CAS 1443279-44-4)
- (S)-2-(Benzyloxy)-1-propanol (CAS 33106-64-8)
- 3-Chloro-7-fluoro-5-nitro-2H-benzo[e][1,2,4]thiadiazine 1,1-dioxide (CAS 1437481-62-3)
- Selumetinib Impurity 20 (CAS CATO-C4X-305320)
- 1-Bromo-2,5-difluoro-4-(trifluoromethoxy)benzene (CAS 1439904-14-9)
- 1-(6-(4-Nitrophenoxy)pyridin-3-yl)ethanone (CAS 1546211-12-4)
- 1-(2,2-difluoroethyl)-3-methyl-1h-pyraZole (CAS 1171013-54-9)
- 6-Fluoro-2-methyl-3-nitropyridine (CAS 18605-16-8)
- 4-Methoxybenzenesulfinamide (CAS 61511-68-0)
- Semaglutide-d5 (CAS CATO-C4X-2226153)
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