3,4-Dibromo-2,5-dimethylthiophene CAS 39129-54-9
| CAS No. | 39129-54-9 |
| Molecular Formula | C6H6Br2S |
| Molecular Weight | 269.98 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 3,4-Dibromo-2,5-dimethylthiophene is closely related to sulfur-containing functionality, bromine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
3,4-Dibromo-2,5-dimethylthiophene (CAS 39129-54-9), molecular formula C6H6Br2S and molecular weight 269.98 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to sulfur-containing functionality, bromine substitution, 3,4-Dibromo-2,5-dimethylthiophene is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 269.98 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
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.
CATO manufactures 3,4-Dibromo-2,5-dimethylthiophene under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C6H6Br2S |
| Molecular Weight | 269.98 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.) | 1968 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 1 |
Related Dibromo Standards
- 2,4-Dibromo-3,5-dimethylthiophene (CAS 63862-00-0)
- 2,5-Dibromo-3,4-dimethyl-thiophene (CAS 74707-05-4)
- 2,5-Dibromo-3-ethylthiophene (CAS 53119-57-6)
- 1,4-dibromo-2,5-dimethylbenzene (CAS 1074-24-4)
- 2,5-Dibromo-3-thiophenecarbaldehyde (CAS 1193-69-7)
- 3,5-Dibromo-2-thiophenecarboxaldehyde (CAS 23688-07-5)
- (4,5-Dibromo-1-methyl-1H-imidazol-2-yl)methanol (CAS 881997-90-6)
- 3,5-Dibromo-6-fluoropyridin-2-amine (CAS 1259477-39-8)
Recommended Standards
- 2-Bromo-5-(2-bromoethyl)thiophene (CAS 57070-74-3)
- 3-Bromo-2-(bromomethyl)-5-methylthiophene (CAS 857360-05-5)
- Pentaerythritol-d8 Dibromide (CAS 1216413-92-1)
- 6-Bromo-4-(trifluoromethyl)picolinic acid (CAS 1060805-49-3)
- 6-((Methylthio)methyl)pyrimidine-2,4(1H,3H)-dione (CAS 59640-46-9)
- 6-Chloro-N-[(4-fluorophenyl)methyl]-5-iodopyridine-3-carboxamide (CAS 1610377-01-9)
- (4Z)-N1,N1-Dimethyl-N4-{1-[2-(pyridin-4-yl)-1,3-thiazol-5-yl]ethylidene}benzene-1,4-diamine (CAS 1212789-93-9)
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- (2R,3R,4R,5R)-2-(6-Chloro-9H-purin-9-yl)-5-(hydroxymethyl)-3-methyltetrahydrofuran-3,4-diol (CAS 205171-05-7)
- Anagrelide Impurity 10 (CAS 147249-42-1)
- Phenazinium, 2-amino-8-(dimethylamino)-10-phenyl-, chloride (CAS 2390-56-9)
- Venetoclax Impurity 12 (CAS 1228780-49-1)
- 3-Aminoisoxazolo[3,4-d]pyrimidine-4,6(1H,5H)-dione (CAS 136411-51-3)
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