3,4-Dichlorothiophene CAS 17249-76-2
| CAS No. | 17249-76-2 |
| Molecular Formula | C4H2Cl2S |
| Molecular Weight | 153.03 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 3,4-Dichlorothiophene (CAS 17249-76-2), a certified reference material (molecular formula C4H2Cl2S, MW 153.03 g/mol) for analytical method development and quality control.
Based on its molecular formula C4H2Cl2S, 3,4-Dichlorothiophene contains sulfur-containing functionality, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 153.03 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 3,4-Dichlorothiophene 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 | C4H2Cl2S |
| Molecular Weight | 153.03 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1961 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Dichlorothiophene Standards
- 2,3-Dichlorothiophene (CAS 17249-79-5)
- 2,5-Dichlorothiophene (CAS 3172-52-9)
- 4,5-dichlorothiophene-3-carbonitrile (CAS 1510984-04-9)
- 3,4-Dichlorothiophene-2-carbaldehyde (CAS 67482-50-2)
- 3,5-Dichlorothiophene-2-carbaldehyde (CAS 67482-51-3)
- 4,5-Dichlorothiophene-3-carbaldehyde (CAS 61200-59-7)
- 3,4-Dichlorothiophene 1,1-dioxide (CAS 52819-14-4)
- 2,5-dichlorothiophene-3-carbaldehyde (CAS 61200-60-0)
Recommended Standards
- 2,4-Dichlorthiophen (CAS 17249-75-1)
- 4-Bromo-1-butanol (contains varying amounts of Tetrahydrofuran) (CAS 33036-62-3)
- 2-Bromoethyl Ethyl Ether (CAS 592-55-2)
- cis-1,2-Dichlorocyclohexane (CAS 10498-35-8)
- Ethyl 2-(3-cyclopropyl-4-(4-fluorophenyl)-1H-pyrazolo[3,4-b]pyridin-1-yl)acetate (CAS 1018162-92-9)
- 3-Fluorocyclohexanecarbaldehyde (CAS 1558372-86-3)
- 1-((3,5-Dimethyl-1H-pyrazol-4-yl)sulfonyl)piperazine (CAS 1049801-48-0)
- 3-Fluoro-2,5-dimethylpyrazine (CAS 33870-93-8)
- 4-(chloromethyl)-2-methylpyrimidine (CAS 89967-01-1)
- (S,S)-(+)-2,3-Butanediol (CAS 19132-06-0)
- 1-(Benzyloxy)-2-methyl-3-nitrobenzene (CAS 20876-37-3)
- 5-Bromo-3-nitro-1H-pyrrolo[2,3-b]pyridine (CAS 507462-26-2)
- N-[(Z)-Amino(phenyl)methylidene]-N-phenylthiourea (CAS 39536-03-3)
- Des-Ser34-Gly33Tirzepatide (CAS CATO-CPTD788941)
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