2,3-Dibromo-5-methylthiophene CAS 30319-03-0
| CAS No. | 30319-03-0 |
| Molecular Formula | C5H4Br2S |
| Molecular Weight | 255.96 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 2,3-Dibromo-5-methylthiophene is closely related to sulfur-containing functionality, bromine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
2,3-Dibromo-5-methylthiophene (CAS 30319-03-0) is a high-purity analytical reference standard with the molecular formula C5H4Br2S and a molecular weight of 255.96 g/mol.
2,3-Dibromo-5-methylthiophene (C5H4Br2S) contains sulfur-containing functionality, bromine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
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 | 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.) | 1965 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 1 |
Related Dibromo Standards
- 2,3-Dibromo-4-methylthiophene (CAS 125257-38-7)
- 2,4-Dibromo-3-methylthiophene (CAS 53119-66-7)
- 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
- 4-Bromo-3,5-dichlorobenzene-1,2-diamine (CAS 98138-54-6)
- 2-Bromo-4-(bromomethyl)thiophene (CAS 73919-93-4)
- [3,5-Difluoro-2-(2,2,2-trifluoroethoxy)phenyl]boronic acid (CAS 936250-26-9)
- 2-Bromo-5-(bromomethyl)thiophene (CAS 59311-27-2)
- 2-(5,6-Dimethoxy-1,2,3,4-tetrahydroisoquinolin-1-yl)acetonitrile (CAS 7634-86-8)
- 951892-14-1 3-(3,4-Dimethylphenyl)-2-methyl-1-propene MFCD07775065 (CAS 951892-14-1)
- N-(piperidin-4-yl)isonicotinamide (CAS 893763-36-5)
- 2-Chloro-4-fluoro-2,2,2-trifluoroacetophenone (CAS 886370-93-0)
- 3-methoxy-2,2-dimethylpropane-1-sulfonamide (CAS 1484317-86-3)
- N,N'-(pentane-1,5-diyl)bis(5-(dimethylamino)naphthalene-1-sulfonamide) (CAS 55521-24-9)
- 5-Vinylisoquinolin-6-amine (CAS 566944-01-2)
- 4-(2-(Benzo[d][1,3]dioxol-5-yl)acetyl)-3,3-dimethylpiperazin-2-one (CAS 946313-62-8)
- 2-Cyano-3-(thiophen-2-yl)acrylamide (CAS 54688-95-8)
- Copper Peptide ยท2 acetate salt (CAS 130120-57-9)
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