2-Bromo-5-chloro-3-methylthiophene CAS 53374-61-1
| CAS No. | 53374-61-1 |
| Molecular Formula | C5H4BrClS |
| Molecular Weight | 211.51 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 211.51 g/mol gives 2-Bromo-5-chloro-3-methylthiophene distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
2-Bromo-5-chloro-3-methylthiophene (CAS 53374-61-1), molecular formula C5H4BrClS and molecular weight 211.51 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 2-Bromo-5-chloro-3-methylthiophene (C5H4BrClS) contains sulfur-containing functionality, chlorine/bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 211.51 g/mol, it falls into the medium-molecular-weight range. 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.
As a certified reference material (CRM), 2-Bromo-5-chloro-3-methylthiophene 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 | C5H4BrClS |
| Molecular Weight | 211.51 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, 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.) | 1972 |
| Halogen Content | Cl/Br-containing |
| Sulfur Atoms | 1 |
Related Bromo Standards
- 5-Bromo-2-chloro-3-methylthiophene (CAS 1182346-30-0)
- 4-Bromo-2-(chloromethyl)thiophene (CAS 170859-70-8)
- 2-Bromo-4-(chloromethyl)thiophene (CAS 73919-92-3)
- 2-Bromo-5-(chloromethyl)thiophene (CAS 7311-46-8)
- 3-Bromo-2-(chloromethyl)thiophene (CAS 7353-88-0)
- 3-Bromo-4-(chloromethyl)thiophene (CAS 70260-08-1)
- 3-Bromo-5-chloro-2-methylthiophene (CAS 61074-71-3)
- 1-bromo-2-(chloromethyl)benzene (CAS 578-51-8)
Recommended Standards
- 3-(bromomethyl)-2-chlorothiophene (CAS 40032-81-3)
- 2-(Bromomethyl)-5-chlorothiophene (CAS 59311-22-7)
- 2-(Bromomethyl)-4-chlorothiophene (CAS 1400991-44-7)
- 4-(bromomethyl)-2-chlorothiophene (CAS 73919-94-5)
- Ethyl 1-(2-morpholinoethyl)-1H-imidazole-4-carboxylate (CAS 2106386-25-6)
- Methyl 3-chloro-6-methylpyrazine-2-carboxylate (CAS 2089377-40-0)
- 4-Isopropylpyridin-2-ol (CAS 408335-38-6)
- 3-Ethylsalicylic Acid (CAS 4295-51-6)
- Methyl ((3-(3-chlorophenyl)-2-oxooxazolidin-5-yl)methyl)carbamate (CAS 954595-98-3)
- 1-methyl-6-(trifluoromethyl)piperidin-3-amine dihydrochloride (CAS 1955558-12-9)
- 1-[(Propan-2-yl)amino]propan-2-one (CAS 763025-68-9)
- 4-[(1,6-Dibromo-2-naphthyl)oxy]piperidinehydrochloride (CAS 1220018-23-4)
- N-Methyl-N-(pyridin-2-yl)pyridin-2-amine (CAS 123368-97-8)
- Semaglutide impurity 266 (CAS CATO-C4X-2226266)
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