3-Methyl-1-(2-methylpropyl)-1h-pyrazole-5-sulfonyl chloride CAS 1245806-70-5
| CAS No. | 1245806-70-5 |
| Molecular Formula | C8H13ClN2O2S |
| Molecular Weight | 236.72 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 236.72 g/mol gives 3-Methyl-1-(2-methylpropyl)-1h-pyrazole-5-sulfonyl chloride distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
3-Methyl-1-(2-methylpropyl)-1h-pyrazole-5-sulfonyl chloride (CAS 1245806-70-5), molecular formula C8H13ClN2O2S and molecular weight 236.72 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C8H13ClN2O2S, 3-Methyl-1-(2-methylpropyl)-1h-pyrazole-5-sulfonyl chloride contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 236.72 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 3-Methyl-1-(2-methylpropyl)-1h-pyrazole-5-sulfonyl chloride 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 | C8H13ClN2O2S |
| Molecular Weight | 236.72 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 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Methyl Standards
- 3-Methyl-1-(2-methylpropyl)-1h-pyrazole-4-sulfonyl chloride (CAS 1006453-74-2)
- 6-[methyl(2-methylpropyl)carbamoyl]pyridine-2-carboxylic acid (CAS 1154974-94-3)
- [(E)-{[4-(2-methylpropyl)phenyl]methylidene}amino]thiourea (CAS 914636-45-6)
- 5-(2-Methylpropyl)-3-[(1H-1,2,3,4-tetrazol-5-yl)amino]cyclohex-2-en-1-one (CAS 1020251-83-5)
- 3-Methyl-1-(2-methylpropyl)-1H-thieno[2,3-c]pyrazole-5-carboxylic acid (CAS 855715-27-4)
- 4-(2-Methylpropyl)benzene-1-sulfonyl chloride (CAS 339370-45-5)
- 4-[4-(2-methylpropyl)phenyl]-1,3-thiazol-2-amine (CAS 351982-44-0)
- 5-(2-Methylpropyl)-5-phenylimidazolidine-2,4-dione (CAS 100615-58-5)
Recommended Standards
- 2-(3-Chlorophenyl)-6-methylpyrimidine-4(3H)-thione (CAS 1239759-77-3)
- 1-(1,3,5-Trimethyl-1h-pyrazol-4-yl)ethane-1-sulfonyl chloride (CAS 1247915-51-0)
- 5-Chloro-3-(2,2-diethoxyethyl)-1,2,4-thiadiazole (CAS 1221341-21-4)
- (3-Isopropyl-1-methyl-1h-pyrazol-4-yl)methanesulfonyl chloride (CAS 1249297-37-7)
- 2-(Furan-2-yl)-5-(1-(styrylsulfonyl)piperidin-4-yl)-1,3,4-oxadiazole (CAS 1212790-16-3)
- 6-Fluoro-2-methylquinoline-5-carbonitrile (CAS 86053-15-8)
- 4-Pentylcyclohexanone (CAS 61203-83-6)
- 2-(3-Amino-4-chloro-1h-pyrazol-1-yl)butanenitrile (CAS 1344333-49-8)
- 4-Amino-2-(difluoromethyl)-5-methylpyridin-3-ol (CAS 1805080-12-9)
- (R)-7-Methyl-1,2,3,4-tetrahydronaphthalen-1-amine (CAS 784139-96-4)
- 4-(1,1-dimethoxyethyl)pyrimidine (CAS 1820640-68-3)
- (2E)-3-(4-Ethoxyphenyl)-1-(4-methoxyphenyl)prop-2-en-1-one (CAS 74280-20-9)
- 5-Oxo-5-(thiophen-2-yl)pentanoic acid (CAS 22971-62-6)
- Semaglutide Impurity 176 (CAS CATO-C4X-2226176)
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