2,4-Dibromo-3-methylthiophene CAS 53119-66-7
| CAS No. | 53119-66-7 |
| Molecular Formula | C5H4Br2S |
| Molecular Weight | 255.96 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
2,4-Dibromo-3-methylthiophene (CAS 53119-66-7), molecular formula C5H4Br2S and molecular weight 255.96 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to sulfur-containing functionality, bromine substitution, 2,4-Dibromo-3-methylthiophene is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 255.96 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
Physical & Chemical Properties
| Molecular Formula | C5H4Br2S |
| Molecular Weight | 255.96 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 | Br-containing |
| Sulfur Atoms | 1 |
Related Dibromo Standards
- 2,3-Dibromo-4-methylthiophene (CAS 125257-38-7)
- 2,3-Dibromo-5-methylthiophene (CAS 30319-03-0)
- 3,5-Dibromo-2-methylthiophene (CAS 29421-73-6)
- 2,2-Dibromo-3-cyanopropionamide (CAS 143111-81-3)
- (4,5-Dibromo-1H-imidazol-2-yl)methanol (CAS 193066-54-5)
- 4,4-Dibromo-2,4-dihydro-5-methyl-3H-pyrazol-3-one (CAS 33549-66-5)
- 3,5-Dibromo-5,6-dihydropyran-2-one (CAS 137776-72-8)
- (4,5-Dibromo-furan-2-yl)-methanol (CAS 19303-43-6)
Recommended Standards
- 2-Bromo-4-(bromomethyl)thiophene (CAS 73919-93-4)
- 2-Bromo-5-(bromomethyl)thiophene (CAS 59311-27-2)
- 4-Bromo-3,5-dichlorobenzene-1,2-diamine (CAS 98138-54-6)
- [3,5-Difluoro-2-(2,2,2-trifluoroethoxy)phenyl]boronic acid (CAS 936250-26-9)
- tert-Butyl 3-(4-methoxyphenyl)-1,2,3,4-tetrahydroquinoxaline-1-carboxylate (CAS 1186195-55-0)
- Benzenamine, 3-(1-cyclopropyl-5-fluoro-1H-benzimidazol-2-yl)-2-methyl- (CAS 1354962-68-7)
- 2-(2-(((tert-Butoxycarbonyl)(isopropyl)amino)methyl)pyrrolidin-1-yl)acetic acid (CAS 1353956-10-1)
- Aripiprazole Impurity 3 (CAS 129722-34-5)
- 1-Chloro-2-(α-chlorophenylmethyl)benzene (CAS 56961-47-8)
- 4-[(E)-[(4-Chlorophenyl)methylene]amino]benzenesulfonamide (CAS 1268249-72-4)
- 3-Chloro-4-fluoro-2-pyrrolidinomethyl benzophenone (CAS 898774-73-7)
- N-Butyl 5-nitropicolinamide (CAS 1437794-67-6)
- 6-Bromoquinoline-3-carbaldehyde (CAS 1196155-68-6)
- Semaglutide Impurity 21(HO-Ste-L-γGlu-AEEA-AEEA-OH) (CAS 1335440-44-2)
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