| CAS No. | 175137-42-5 |
| Molecular Formula | C7H6Br2O3S |
| Molecular Weight | 329.99 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 329.99 g/mol gives Methyl 4,5-dibromo-3-methoxythiophene-2-carboxylate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Methyl 4,5-dibromo-3-methoxythiophene-2-carboxylate (CAS 175137-42-5), molecular formula C7H6Br2O3S and molecular weight 329.99 g/mol, is a CATO reference standard with documented purity and traceability.
Methyl 4,5-dibromo-3-methoxythiophene-2-carboxylate (C7H6Br2O3S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 Methyl 4,5-dibromo-3-methoxythiophene-2-carboxylate 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.
| Molecular Formula | C7H6Br2O3S |
| Molecular Weight | 329.99 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2007 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 1 |