4-Cyclopropylthiophene-2-sulfonyl chloride CAS 2407349-23-7
| CAS No. | 2407349-23-7 |
| Molecular Formula | C7H7ClO2S2 |
| Molecular Weight | 222.71 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Cyclopropylthiophene-2-sulfonyl chloride (CAS 2407349-23-7), molecular formula C7H7ClO2S2 and molecular weight 222.71 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 4-Cyclopropylthiophene-2-sulfonyl chloride (C7H7ClO2S2) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 222.71 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C7H7ClO2S2 |
| Molecular Weight | 222.71 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2000 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 2 |
Related Cyclopropylthiophene Standards
- 3-Cyclopropylthiophene-2-sulfonyl chloride (CAS 2172096-17-0)
- 5-Cyclopropylthiophene-2-sulfonyl chloride (CAS 2141875-46-7)
- N-cyclopropylthiophene-2-sulfonamide (CAS 618392-62-4)
- Methyl 5-cyclopropylthiophene-2-carboxylate (CAS 1021432-60-9)
- Methyl 3-cyclopropylthiophene-2-carboxylate (CAS 1871848-03-1)
- Methyl 4-cyclopropylthiophene-2-carboxylate (CAS 2111296-73-0)
- 4-Cyclopropylthiophene-2-carboxylic acid (CAS 1252903-38-0)
- 5-Cyclopropylthiophene-3-carboxylic acid (CAS 1518721-51-1)
Recommended Standards
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