2-Chlorothiophene CAS 96-43-5
| CAS No. | 96-43-5 |
| Molecular Formula | C4H3ClS |
| Molecular Weight | 118.58 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-Chlorothiophene (CAS 96-43-5) is a high-purity analytical reference standard with the molecular formula C4H3ClS and a molecular weight of 118.58 g/mol.
Owing to sulfur-containing functionality, chlorine substitution, 2-Chlorothiophene is typically white to off-white liquid. Its solid-state physicochemical attributes — including a molecular weight of 118.58 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
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 | C4H3ClS |
| Molecular Weight | 118.58 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.) | 1957 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Chlorothiophene Standards
- 3-Chlorothiophene (CAS 17249-80-8)
- 4-Chlorothiophene-3-carbonitrile (CAS 1174535-30-8)
- 2-Chlorothiophene-3-carbonitrile (CAS 127667-02-1)
- 2-Chlorothiophene-3-carbaldehyde (CAS 14345-98-3)
- 4-chlorothiophene-3-carbaldehyde (CAS 36155-89-2)
- 3-Chlorothiophene-2-Carbaldehyde (CAS 67482-48-8)
- 5-chlorothiophene-3-carbonitrile (CAS 1108712-56-6)
- 3-chlorothiophene-2-carbonitrile (CAS 147123-67-9)
Recommended Standards
- 53655-21-3 1-Chloro(1-~13~C)benzene DTXSID90736169 (CAS 53655-21-3)
- 1-Chloro-3-methylbut-3-en-2-one (CAS 193958-16-6)
- 59164-15-7 1-Chloro(4-~13~C)benzene DTXSID10736181 (CAS 59164-15-7)
- 694-28-0 2-Chlorocyclopentan-one Cyclopentanone, 2-chloro- 4-07-00-00012 (Beilstein Handbook Reference) BRN 1098899 alpha-Chlorocyclopentanone 2-Chlorocyclopentanone 2-Chloro-1-cyclopentanone EINECS 211-769-9 NSC 60206 (CAS 694-28-0)
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