2,3,4-Trichlorothiophene CAS 17249-78-4
| CAS No. | 17249-78-4 |
| Molecular Formula | C4HCl3S |
| Molecular Weight | 187.47 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 187.47 g/mol gives 2,3,4-Trichlorothiophene distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
2,3,4-Trichlorothiophene (CAS 17249-78-4) is a high-purity analytical reference standard with the molecular formula C4HCl3S and a molecular weight of 187.47 g/mol.
Based on its molecular formula C4HCl3S, 2,3,4-Trichlorothiophene contains sulfur-containing functionality, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 187.47 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
As a certified reference material (CRM), 2,3,4-Trichlorothiophene meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C4HCl3S |
| Molecular Weight | 187.47 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 Trichlorothiophene Standards
Recommended Standards
- (Bromomethyl)chlorodimethylsilane (CAS 16532-02-8)
- 1-Bromo-3-chloro-2-methyl-2-propanol (CAS 66466-56-6)
- 5-(Chloromethyl)-3-(trifluoromethyl)-4,5-dihydroisoxazole (CAS 351063-95-1)
- 1-Bromo-3-(chloromethoxy)propane (CAS 54314-83-9)
- 6-Chloro-2-(difluoromethyl)-5-iodonicotinonitrile (CAS 1805380-64-6)
- 3-(5-Bromothiophen-2-yl)-5-methylisoxazole-4-carboxylic acid (CAS 951499-33-5)
- 2-((2-Aminophenyl)thio)acetic acid (CAS 94-56-4)
- Benzoyl-L-alanyl-L-arginine (CAS 71448-11-8)
- 7-Bromo-3-chloroquinoxalin-2-amine (CAS 1240622-41-6)
- (S)-4-Benzyl-3-(3-phenylpropanoyl)oxazolidin-2-one (CAS 96930-27-7)
- 2-Chloro-3-(2-fluorophenyl)-5-(trifluoromethyl)pyridine (CAS 1214334-02-7)
- H-Val-Asp-OH (CAS 20556-16-5)
- 6-Amino-4-(1-ethyl-3-methyl-1H-pyrazol-4-yl)-3-methyl-1,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile (CAS 1006326-38-0)
- Semaglutide (CAS 910463-68-2（free base）)
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