Methyl 5-(2,2-dibromoacetyl)thiophene-2-carboxylate CAS 656227-47-3
| CAS No. | 656227-47-3 |
| Molecular Formula | C8H6Br2O3S |
| Molecular Weight | 342.00 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Methyl 5-(2,2-dibromoacetyl)thiophene-2-carboxylate (CAS 656227-47-3) is a high-purity analytical reference standard with the molecular formula C8H6Br2O3S and a molecular weight of 342.00 g/mol.
Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system, Methyl 5-(2,2-dibromoacetyl)thiophene-2-carboxylate is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 342.00 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.
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 | C8H6Br2O3S |
| Molecular Weight | 342.00 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 1 |
Related Methyl Standards
Recommended Standards
- 1,2-Dibromo-4,5-diethoxy-3-fluorobenzene (CAS 474554-34-2)
- 7-Bromo-2,6-dichloro-8-fluoro-4-(methylthio)quinazoline (CAS 2857929-87-2)
- Bis(5-bromo-2-pyridinyl)methanone (CAS 656828-00-1)
- 7-Bromo-4,6-dichloro-8-fluoro-2-(methylthio)quinazoline (CAS 2757097-20-2)
- Dimethyl (2-oxobutyl)phosphonate (CAS 41162-15-6)
- 7-Methyl-2H-pyrano[2,3-b]pyridin-3(4H)-one (CAS 1260667-47-7)
- tert-Butyl (R)-3-acetoxypyrrolidine-1-carboxylate (CAS 101408-94-0)
- 1-(3-Methylbenzyl)-1H-pyrazol-4-ol (CAS 1595751-31-7)
- 2-[3-(3-pyridyl)oxetan-3-yl]ethanethiol (CAS 1904196-69-5)
- 5-Chloropyrido[3,4-b]pyrazin-2(1H)-one (CAS 1600511-79-2)
- 4-(tert-Butoxycarbonyl)-1-(pyridin-2-ylmethyl)piperazine-2-carboxylic acid (CAS 1420788-16-4)
- (4R,5S)-4-isopropyl-5-(3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctyl)oxazolidin-2-one (CAS 1432793-97-9)
- 2,2,2-Trifluoro-N-(2,2,6,6-tetramethylpiperidin-4-yl)acetamide (CAS 61948-16-1)
- Insulin Degludec Impurity 8 (CAS CATO-C4X-21578)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com