2-Chloro-5-[(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)sulfamoyl]benzoic acid CAS 438031-01-7
| CAS No. | 438031-01-7 |
| Molecular Formula | C18H16ClN3O5S |
| Molecular Weight | 421.85 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 2-Chloro-5-[(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)sulfamoyl]benzoic acid is closely related to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 2-Chloro-5-[(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)sulfamoyl]benzoic acid (CAS 438031-01-7), a certified reference material (molecular formula C18H16ClN3O5S, MW 421.85 g/mol) for analytical method development and quality control.
Based on its molecular formula C18H16ClN3O5S, 2-Chloro-5-[(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)sulfamoyl]benzoic acid contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 421.85 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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.
As a certified reference material (CRM), 2-Chloro-5-[(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)sulfamoyl]benzoic acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C18H16ClN3O5S |
| Molecular Weight | 421.85 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Chloro Standards
- 4-Chloro-3-[(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1h-pyrazol-4-yl)sulfamoyl]benzoic acid (CAS 109030-05-9)
- 4-Chloro-N-(4-(((3-(trifluoromethyl)phenyl)thio)methyl)phenyl)benzamide (CAS 338398-62-2)
- 3-Chloro-2-{[7-(4-methylphenyl)-[1,2,4]triazolo[1,5-a]pyrimidin-2-yl]sulfanyl}-5-(trifluoromethyl)pyridine (CAS 338775-16-9)
- N-(2-((3-chloro-5-(trifluoromethyl)pyridin-2-yl)thio)-1-methyl-1H-imidazol-5-yl)morpholine-4-carboxamide (CAS 303151-94-2)
- N-(2-chloro-5-(5-methylbenzo[d]oxazol-2-yl)phenyl)-3-methyl-4-nitrobenzamide (CAS 301354-47-2)
- 3-Chloro-N-(4-(trifluoromethoxy)phenyl)naphtho[1,2-b]thiophene-2-carboxamide (CAS 1024164-16-6)
- 2-(3-Chloro-5-(trifluoromethyl)pyridin-2-yl)-N-(4-sulfamoylphenethyl)acetamide (CAS 478063-71-7)
- 1-(4-chloro-2-nitrobenzenesulfonyl)-4-[(2E)-3-phenylprop-2-en-1-yl]piperazine 1025588-81-1 MS-10439 (CAS 1025588-81-1)
Recommended Standards
- 2-(4-Chlorophenyl)-6-(1-(1,1-dioxidotetrahydrothiophen-3-yl)-1H-pyrazol-5-yl)-4-methyl-1,2,4-triazine-3,5(2H,4H)-dione (CAS 477709-02-7)
- 1-(Tert-butyl) 2-ethyl (2S,5S)-5-(2-chloro-5-(trifluoromethyl)phenyl)pyrrolidine-1,2-dicarboxylate (CAS 1648890-05-4)
- Amlodipine Metabolite 4 (CAS 113994-45-9)
- N-(4-(((4-chlorophenyl)thio)methyl)phenyl)-4-(trifluoromethyl)benzamide (CAS 321431-96-3)
- 2-(Pyridin-3-yl)-2-(pyrrolidin-1-yl)ethan-1-amine (CAS 855659-43-7)
- 2-((5-(N,N-Dimethylsulfamoyl)-2-methylphenyl)amino)-2-oxoethyl 2-(methylthio)nicotinate (CAS 380176-64-7)
- Ethyl 4-(pyridin-3-yl)piperidine-4-carboxylate (CAS 1191123-72-4)
- 4-Cyclopropaneamido-2-methoxybenzene-1-sulfonyl chloride (CAS 926187-74-8)
- 5-Bromo-1-tosyl-1H-pyrrolo[2,3-b]pyridin-3(2H)-one (CAS 1207626-50-3)
- 5,6-Dihydropyrazolo[1,5-a]pyridin-7(4H)-one (CAS 2102408-70-6)
- 1-(3-Oxetanyl)-1H-pyrazole-4-boronic Acid Pinacol Ester (CAS 1339890-99-1)
- 6-(Furan-2-yl)-2-methylpyridine-3-carboxylic acid (CAS 1240527-31-4)
- 1-Bromo-3-chloro-2-methyl-2-propanol (CAS 66466-56-6)
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