3-Oxocyclobutane-1-sulfonyl chloride CAS 2090334-26-0
| CAS No. | 2090334-26-0 |
| Molecular Formula | C4H5ClO3S |
| Molecular Weight | 168.60 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 3-Oxocyclobutane-1-sulfonyl chloride.
CATO supplies 3-Oxocyclobutane-1-sulfonyl chloride (CAS 2090334-26-0), a certified reference material (molecular formula C4H5ClO3S, MW 168.60 g/mol) for analytical method development and quality control.
The molecular framework of 3-Oxocyclobutane-1-sulfonyl chloride (C4H5ClO3S) is characterized by a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
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 | C4H5ClO3S |
| Molecular Weight | 168.60 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1997 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Oxocyclobutane Standards
- 3-oxocyclobutane-1,1-dicarboxylic acid (CAS 129314-76-7)
- 3-Oxocyclobutane-1,2-dicarboxylic acid (CAS 2231673-47-3)
- Ethyl 2-oxocyclobutane-1-carboxylate (CAS 213478-56-9)
- 1-methyl-3-oxocyclobutane-1-carboxylic acid (CAS 286442-89-5)
- Methyl 2-oxocyclobutane-1-carboxylate (CAS 52903-53-4)
- 3-Oxocyclobutane-1-carboxamide (CAS 1261999-31-8)
- 1-methyl-2-oxocyclobutane-1-carbonitrile (CAS 287958-89-8)
- 1-methyl-3-oxocyclobutane-1-carbonitrile (CAS 32082-17-0)
Recommended Standards
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- ABTS (CAS 30931-67-0)
- N-(4-bromo-3-methylphenyl)tetrahydro-2H-pyran-4-carboxamide (CAS 1094378-03-6)
- (4-Bromo-3-nitrophenyl)(phenyl)methanone (CAS 56107-03-0)
- 2-Amino-2-(1,5-dimethyl-1h-pyrazol-4-yl)ethan-1-ol (CAS 1485390-36-0)
- 2-Methyl-5-(5-nitrofuran-2-yl)-1H-1,2,4-triazole-3(2H)-thione (CAS 61323-57-7)
- 3-Bromo-8-(trifluoromethoxy)quinoline (CAS 2241594-65-8)
- Semaglutide impurity 236 (CAS CATO-C4X-2226236)
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