2-Bromo-5-methoxythiophene CAS 57070-77-6
| CAS No. | 57070-77-6 |
| Molecular Formula | C5H5BrOS |
| Molecular Weight | 193.06 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 193.06 g/mol gives 2-Bromo-5-methoxythiophene distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
2-Bromo-5-methoxythiophene (CAS 57070-77-6) is a high-purity analytical reference standard with the molecular formula C5H5BrOS and a molecular weight of 193.06 g/mol.
2-Bromo-5-methoxythiophene (C5H5BrOS) contains sulfur-containing functionality, a hydroxyl group, an ether linkage, 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.
As a certified reference material (CRM), 2-Bromo-5-methoxythiophene meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C5H5BrOS |
| Molecular Weight | 193.06 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1973 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 1 |
Related Bromo Standards
- 3-Bromo-4-methoxythiophene (CAS 110545-69-2)
- 5-bromo-3-ethyl-1,2,4-thiadiazole (CAS 1351345-63-5)
- 5-Bromo-3-isothiazolemethanamine (CAS 1508458-54-5)
- 2-Bromo-3-methoxythiophene (CAS 174756-14-0)
- (4-Bromo-1,2-thiazol-5-yl)methanamine (CAS 1781571-44-5)
- (4-Bromo-2-thienyl)methanol (CAS 79757-77-0)
- 1-(4-Bromo-1,3-thiazol-2-yl)methanamine (CAS 697299-86-8)
- 2-Bromo-4-methoxythiophene (CAS 78282-35-6)
Recommended Standards
- 2-Bromo-5-ethyl-1,3,4-thiadiazole (CAS 57709-49-6)
- 2-Bromo-5-methylthiazol-4-amine (CAS 554429-01-5)
- 2-Bromo-6-fluorospiro[3.3]heptane (CAS 2715119-82-5)
- 2-Amino-5-bromo-4-methylthiazole (CAS 3034-57-9)
- ACTB-1003 (CAS 939805-30-8)
- 1-2-3-4-Tetra-O-benzoyl-D-xylofuranose (CAS 5432-87-1)
- 3-(6-Bromo-2-oxobenzo[d]oxazol-3(2H)-yl)propanoic acid (CAS 13610-61-2)
- N-(4-(4-Chlorophenyl)thiazol-2-yl)-2,3-dihydrobenzo[b][1,4]dioxine-2-carboxamide (CAS 515841-78-8)
- 2-(2-Methyl-3-oxobutan-2-yl)malonic acid (CAS 35167-45-4)
- 2-((2-(4-Chlorophenyl)-2-oxoethyl)thio)-4-(4-methoxyphenyl)-6-phenylnicotinonitrile (CAS 332100-84-2)
- 2-(Cyanomethyl)-4-methoxybenzoic acid (CAS 76254-24-5)
- (E)-3-hydroxy-2-(((4-(4-methoxyphenyl)thiazol-2-yl)imino)methyl)-1H-inden-1-one (CAS 1024383-70-7)
- Tert-butyl n-[2-(piperidin-3-ylformamido)ethyl]carbamate (CAS 1221726-00-6)
- Peptide Impurity 24 (CAS CATO-CPTD788824)
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