Ethyl 2-bromo-5-methylthiophene-3-carboxylate CAS 1374676-14-8
| CAS No. | 1374676-14-8 |
| Molecular Formula | C8H9BrO2S |
| Molecular Weight | 249.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Ethyl 2-bromo-5-methylthiophene-3-carboxylate (CAS 1374676-14-8) is a high-purity analytical reference standard with the molecular formula C8H9BrO2S and a molecular weight of 249.12 g/mol.
Based on its molecular formula C8H9BrO2S, Ethyl 2-bromo-5-methylthiophene-3-carboxylate contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 249.12 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
As a certified reference material (CRM), Ethyl 2-bromo-5-methylthiophene-3-carboxylate 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 | C8H9BrO2S |
| Molecular Weight | 249.12 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; 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.) | 1991 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 1 |
Related Ethyl Standards
- Ethyl 2-bromo-2-(thiophen-2-yl)acetate (CAS 104688-01-9)
- Methyl 4-bromo-5-ethylthiophene-2-carboxylate (CAS 1047645-89-5)
- Ethyl 4-bromo-5-methylthiophene-2-carboxylate (CAS 1256286-44-8)
- 5-bromo-7-fluoro-tetralin-1-one (CAS 1260018-37-8)
- 8-bromo-5-fluoro-tetralin-1-one (CAS 1260018-43-6)
- 1-Bromo-2-(ethanesulfonyl)benzene (CAS 1299474-17-1)
- 5-Bromo-2,4-dimethoxybenzenethiol (CAS 1303890-61-0)
- 5-Bromo-2-methyl-thiophene-3-carboxylic acid ethyl ester (CAS 1824068-41-8)
Recommended Standards
- 2-Hydrazinyl-3-methyl-5-(tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine (CAS 1354713-39-5)
- methyl 2-(5-bromothiophen-2-yl)propanoate (CAS 1375250-58-0)
- 6-Hydrazinyl-2-methyl-3-(tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine (CAS 1353746-95-8)
- Methyl 3-(2-bromothiophen-3-yl)propanoate (CAS 1419171-81-5)
- rel-Methyl (3R,4R)-4-amino-1-(cyclopropylmethyl)piperidine-3-carboxylate (CAS 2178052-81-6)
- Ethyl 3-benzoylbenzo[f]pyrrolo[1,2-a]quinoline-1-carboxylate (CAS 70654-02-3)
- 3-(trifluoromethyl)pyrrolidine hydrochloride (CAS 1189485-03-7)
- (S)-3-Amino-3-(4-fluorophenyl)propan-1-ol hydrochloride (CAS 1213160-13-4)
- (2S)-2-ethylpiperazine (CAS 207284-20-6)
- 6-Bromo-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,3-dihydro-1H-inden-2-yl acetate (CAS 2377587-33-0)
- 2-Chloro-6,7-difluorobenzoxazole (CAS 195737-22-5)
- 3-(2,4-dioxohexahydropyrimidin-1-yl)-4-methyl-benzonitrile (CAS 2633726-04-0)
- Chloramphenicol 3-Acetate (CAS 10318-16-8)
- Semaglutide impurity 199 (CAS CATO-C4X-2226199)
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