5-Chloro-1,3-dimethyl-N-(5-methylisoxazol-3-yl)-1H-pyrazole-4-sulfonamide CAS 647825-41-0
| CAS No. | 647825-41-0 |
| Molecular Formula | C9H11ClN4O3S |
| Molecular Weight | 290.73 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 290.73 g/mol gives 5-Chloro-1,3-dimethyl-N-(5-methylisoxazol-3-yl)-1H-pyrazole-4-sulfonamide distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
5-Chloro-1,3-dimethyl-N-(5-methylisoxazol-3-yl)-1H-pyrazole-4-sulfonamide (CAS 647825-41-0), molecular formula C9H11ClN4O3S and molecular weight 290.73 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution, 5-Chloro-1,3-dimethyl-N-(5-methylisoxazol-3-yl)-1H-pyrazole-4-sulfonamide is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 290.73 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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), 5-Chloro-1,3-dimethyl-N-(5-methylisoxazol-3-yl)-1H-pyrazole-4-sulfonamide 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 | C9H11ClN4O3S |
| Molecular Weight | 290.73 g/mol |
| 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 methanol, ethanol, DMSO |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Chloro Standards
- 3-(5-Chloro-3-methyl-1-(4-methylbenzyl)-1h-pyrazol-4-yl)acrylic acid (CAS 1006441-74-2)
- N-(4-((5-Chloro-2-hydroxybenzyl)amino)phenyl)acetamide (CAS 1019629-35-6)
- (2E)-3-(2-Chloro-6-fluorophenyl)-1-(2-methoxyphenyl)prop-2-en-1-one (CAS 1043387-53-6)
- 2-[2-(4-Chloro-phenyl)-ethyl]-6-hydroxy-benzoic acid methyl ester (CAS 1171924-95-0)
- (2E)-3-(2-Chloro-6-fluorophenyl)-1-(4-methoxyphenyl)prop-2-en-1-one (CAS 1182060-09-8)
- 5-Chloro-2-(3-nitrophenyl)benzo[d]thiazole (CAS 1195619-46-5)
- trans-4-(8-Chloro-1,7-naphthyridin-6-yl)cyclohexanecarboxylic acid (CAS 1234349-07-5)
- (2E)-3-(2-Chloro-6-fluorophenyl)-1-(3-methoxyphenyl)prop-2-en-1-one (CAS 1354942-31-6)
Recommended Standards
- N-(Benzo[c][1,2,5]thiadiazol-4-yl)-4-chloropicolinamide (CAS 1207054-97-4)
- N-(4-(N-acetylsulfamoyl)phenyl)-2-chloroacetamide (CAS 97433-27-7)
- 3-[1-(2-Chlorobenzyl)-3,5-dimethyl-4-pyrazolyl]acrylic Acid (CAS 1006492-38-1)
- Methyl 6-(chlorosulfonyl)chromane-4-carboxylate (CAS 847949-12-6)
- 2-mercapto-3-(4-methoxyphenyl)-5-methyl-3,5-dihydro-4H-imidazol-4-one (CAS 125751-03-3)
- (4-hydroxybenzyl)triphenylphosphonium (CAS 1607833-66-8)
- 4-(4-Fluorobenzoyl)benzoic acid (CAS 148038-12-4)
- 2-Chloro-n-{[3-(2-oxopyrrolidin-1-yl)phenyl]methyl}acetamide (CAS 1269152-12-6)
- Loxoprofen Impurity 144 (CAS CATO-C4X-1488144)
- (5-Methoxy-3-(trifluoromethyl)pyrazin-2-yl)methanamine (CAS 2770349-37-4)
- (E,E)-6-α-Ionylidene-4-methylpyran-2-one-d5 (CAS 1331668-72-4)
- 5-Amino-N-(4-chlorophenyl)-2-(piperidin-1-yl)benzene-1-sulfonamide (CAS 327079-49-2)
- 1,6-Dibromo-2-methoxynaphthalene (CAS 66996-59-6)
- Tirzepatide Impurity 52 (CAS CATO-C4X-324052)
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