3-Methylbutane-2-sulfonyl chloride CAS 78429-87-5
| CAS No. | 78429-87-5 |
| Molecular Formula | C5H11ClO2S |
| Molecular Weight | 170.66 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-Methylbutane-2-sulfonyl chloride (CAS 78429-87-5) is a high-purity analytical reference standard with the molecular formula C5H11ClO2S and a molecular weight of 170.66 g/mol.
Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, 3-Methylbutane-2-sulfonyl chloride is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 170.66 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
CATO manufactures 3-Methylbutane-2-sulfonyl chloride 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 | C5H11ClO2S |
| Molecular Weight | 170.66 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 0.0 |
| CAS Registry Year (est.) | 1979 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Methylbutane Standards
- 2-Methylbutane-2-sulfonyl chloride (CAS 16489-14-8)
- 2-Methylbutane-1-sulfonyl chloride (CAS 78429-86-4)
- 3-Methylbutane-1-sulfonyl Chloride (CAS 22795-37-5)
- 3-Methylbutane-1-sulfinyl chloride (CAS 859811-01-1)
- 2-methylbutane-1-sulfonyl fluoride (CAS 1311315-63-5)
- 3-Methylbutane-2-sulfonamide (CAS 1247402-34-1)
- n-Methylbutane-1-sulfonamide (CAS 16867-25-7)
- 2-Methylbutane-1-sulfonamide (CAS 854461-68-0)
Recommended Standards
- n-Pentyl sulfonyl chloride (CAS 6303-18-0)
- pentane-2-sulfonyl chloride (CAS 59427-30-4)
- 2-chloromethanesulfonyl-2-methylpropane (CAS 24824-96-2)
- Pentane-3-sulfonyl Chloride (CAS 42603-81-6)
- 3-Amino-6-(trifluoromethyl)pyridine-2-methanol (CAS 1260769-25-2)
- 4-Bromo-2,5-difluoro-N-methoxy-N-methylbenzamide (CAS 2007959-20-6)
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- 4-Chloro-6-(4-ethoxypiperidin-1-yl)-2-methylpyrimidine (CAS 1490083-36-7)
- 4-(3-Methyl-2,5-dioxo-pyrrolidin-1-yl)-benzoic acid (CAS 157928-79-5)
- N-methyl-1-(1-((tetrahydro-2H-pyran-4-yl)methyl)-1H-pyrazol-4-yl)methanamine (CAS 1408724-20-8)
- Ethyl Ester 4-amino-5-propyl-1H-Pyrazole-3-carboxylic acid (CAS 76424-50-5)
- 3-Chloro-5-(cyclopropylmethoxy)phenol (CAS 1243408-51-6)
- Semaglutide impurity 87 (CAS CATO-C4X-222687)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com