Methyl 4-bromo-5-ethylthiophene-2-carboxylate CAS 1047645-89-5
| CAS No. | 1047645-89-5 |
| Molecular Formula | C8H9BrO2S |
| Molecular Weight | 249.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Methyl 4-bromo-5-ethylthiophene-2-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.
CATO supplies Methyl 4-bromo-5-ethylthiophene-2-carboxylate (CAS 1047645-89-5), a certified reference material (molecular formula C8H9BrO2S, MW 249.12 g/mol) for analytical method development and quality control.
Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system, Methyl 4-bromo-5-ethylthiophene-2-carboxylate is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 249.12 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.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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.) | 1988 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 1 |
Related Methyl Standards
- Ethyl 2-bromo-2-(thiophen-2-yl)acetate (CAS 104688-01-9)
- 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)
- Ethyl 2-bromo-5-methylthiophene-3-carboxylate (CAS 1374676-14-8)
- 5-Bromo-2-methyl-thiophene-3-carboxylic acid ethyl ester (CAS 1824068-41-8)
Recommended Standards
- Isopropyl 5-bromothiophene-2-carboxylate (CAS 1174013-07-0)
- Upadacitinib Impurity 187 (CAS CATO-C4X-2405187)
- N,N-Dimethyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrazin-2-amine (CAS 1186041-96-2)
- 898761-15-4 5-Chloro-1-(3-chloro-4-fluorophenyl)pentan-1-one DTXSID00645157 (CAS 898761-15-4)
- 2-Amino-3-(2-methylbenzo[d]oxazol-5-yl)propanoic acid (CAS 1220953-94-5)
- 2-{[(4-bromophenyl)carbamoyl]methanesulfonyl}acetic acid (CAS 1016777-89-1)
- 2-Amino-4-(dimethoxymethyl)phenol (CAS 2244086-66-4)
- N1-(2,4-Difluorophenyl)-N2-(2-fluorobenzyl)oxalamide (CAS 838871-36-6)
- (Hexahydro-1H-pyrrolizin-3-yl)methanol (CAS 117343-10-9)
- S-Methyl-N,N-diethylthiocarbamate Sulfone (CAS 155514-79-7)
- (3S,8aS)-2-(tert-butoxycarbonyl)octahydropyrrolo[1,2-a]pyrazine-3-carboxylic acid (CAS 1421527-61-8)
- 8-Amino-7-bromo-1,2,3,4-tetrahydronaphthalene-1-carbonitrile (CAS 1209459-82-4)
- 1-Bromo-2,4-difluoro-5-ethoxybenzene (CAS 900175-11-3)
- 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