2,5-Dichlorothiophene CAS 3172-52-9
| CAS No. | 3172-52-9 |
| Molecular Formula | C4H2Cl2S |
| Molecular Weight | 153.03 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 2,5-Dichlorothiophene.
2,5-Dichlorothiophene (CAS 3172-52-9) is a high-purity analytical reference standard with the molecular formula C4H2Cl2S and a molecular weight of 153.03 g/mol.
The molecular framework of 2,5-Dichlorothiophene (C4H2Cl2S) is characterized by sulfur-containing functionality, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
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 | C4H2Cl2S |
| Molecular Weight | 153.03 g/mol |
| Purity | >95% |
| 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 Dichlorothiophene Standards
- 3,4-Dichlorothiophene (CAS 17249-76-2)
- 2,3-Dichlorothiophene (CAS 17249-79-5)
- 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
- cis-1,2-Dichlorocyclohexane (CAS 10498-35-8)
- 1,2-Dichlorocyclohexane (CAS 1121-21-7)
- 2,4-Dichlorthiophen (CAS 17249-75-1)
- cis-1,4-Dichlorocyclohexane (CAS 16749-11-4)
- Maleimide-DOTA (CAS 1006711-90-5)
- Carbaryl Impurity 12 (CAS 146074-42-2)
- 6-chloro-5-fluoro-1H-pyrrolo[2,3-b]pyridine (CAS 1190321-96-0)
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- 2-(4-Bromo-2-fluorophenoxy)butanoyl chloride (CAS 2138016-81-4)
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- Clofarabine Impurity 13 (CAS 1904-98-9)
- rac-(2R,6S)-2-ethyl-6-methylpiperazine (CAS 2031242-31-4)
- Benzyl 3-((S)-2-amino-3-methylbutanamido)pyrrolidine-1-carboxylate (CAS 1354024-17-1)
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