3-Acetyl-2,5-dichlorothiophene CAS 36157-40-1
| CAS No. | 36157-40-1 |
| Molecular Formula | C6H4Cl2OS |
| Molecular Weight | 195.07 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
3-Acetyl-2,5-dichlorothiophene (CAS 36157-40-1), molecular formula C6H4Cl2OS and molecular weight 195.07 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 3-Acetyl-2,5-dichlorothiophene (C6H4Cl2OS) contains sulfur-containing functionality, 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 195.07 g/mol, it falls into the medium-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C6H4Cl2OS |
| Molecular Weight | 195.07 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 | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1967 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Acetyl Standards
- 4,5-Dichlorothiophene-3-carboxylic acid (CAS 123418-70-2)
- 2,4-Dichlorothiophene-3-carboxylic acid (CAS 1934940-61-0)
- 2,5-dichlorothiophene-3-carbaldehyde (CAS 61200-60-0)
- 3,4-Dichlorothiophene 1,1-dioxide (CAS 52819-14-4)
- 3,5-Dichlorothiophene-2,4-dicarbaldehyde (CAS 1823800-83-4)
- 2,5-Dichlorothiophene-3,4-dicarbaldehyde (CAS 55581-76-5)
- 4,5-Dichlorothiophene-2,3-dicarbaldehyde (CAS 89465-82-7)
- 3,4-Dichlorothiophene-2-carbaldehyde (CAS 67482-50-2)
Recommended Standards
- 3,4,5,6-Tetrafluoropicolinic acid (CAS 21550-66-3)
- 3-Chloro-4-methylthiophene-2-carbonyl chloride (CAS 690632-13-4)
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- 4-(2,2-Dichlorovinyl)thiazol-2-amine (CAS 73040-47-8)
- 3-chloro-2,5-diiodo-thiophene (CAS 2250242-07-8)
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