4,5-Dimethylthiophene-3-carbonyl chloride CAS 1160248-80-5
| CAS No. | 1160248-80-5 |
| Molecular Formula | C7H7ClOS |
| Molecular Weight | 174.65 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system, 4,5-Dimethylthiophene-3-carbonyl chloride is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 174.65 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.
CATO supplies 4,5-Dimethylthiophene-3-carbonyl chloride (CAS 1160248-80-5), a certified reference material (molecular formula C7H7ClOS, MW 174.65 g/mol) for analytical method development and quality control.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C7H7ClOS |
| Molecular Weight | 174.65 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.) | 1989 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Dimethylthiophene Standards
- 4,5-dimethylthiophene-2-carbonyl chloride (CAS 1384429-84-8)
- 2,5-Dimethylthiophene-3-carbonyl chloride (CAS 57248-13-2)
- 2,5-Dimethylthiophene-3-carbothioamide (CAS 1250126-94-3)
- Methyl 2,4-dimethylthiophene-3-carboxylate (CAS 1195590-21-6)
- Methyl 4,5-dimethylthiophene-3-carboxylate (CAS 14559-13-8)
- Methyl 4,5-dimethylthiophene-2-carboxylate (CAS 168850-69-9)
- Methyl 2,5-dimethylthiophene-3-carboxylate (CAS 53562-48-4)
- Ethyl 3,5-dimethylthiophene-2-carboxylate (CAS 132039-30-6)
Recommended Standards
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