4-Bromo-5-ethylthiophene-2-carboxylic acid CAS 40477-61-0
| CAS No. | 40477-61-0 |
| Molecular Formula | C7H7BrO2S |
| Molecular Weight | 235.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 4-Bromo-5-ethylthiophene-2-carboxylic acid.
CATO supplies 4-Bromo-5-ethylthiophene-2-carboxylic acid (CAS 40477-61-0), a certified reference material (molecular formula C7H7BrO2S, MW 235.10 g/mol) for analytical method development and quality control.
The molecular framework of 4-Bromo-5-ethylthiophene-2-carboxylic acid (C7H7BrO2S) is characterized by a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
CATO manufactures 4-Bromo-5-ethylthiophene-2-carboxylic acid 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.
Physical & Chemical Properties
| Molecular Formula | C7H7BrO2S |
| Molecular Weight | 235.10 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.) | 1968 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 1 |
Related Bromo Standards
- Methyl 3-bromo-5-methylthiophene-2-carboxylate (CAS 1257535-60-6)
- methyl 5-bromo-2-methyl-thiophene-3-carboxylate (CAS 1259396-11-6)
- 2-Bromo-5-(oxolan-3-yl)-1,3,4-thiadiazole (CAS 1342036-39-8)
- methyl 2-bromo-2-(thiophen-3-yl)acetate (CAS 135660-91-2)
- 5-Bromo-N,N-dimethylthiazole-2-carboxamide (CAS 1414958-22-7)
- 2-(3-Bromo-5-methylthiophen-2-yl)acetic acid (CAS 1484993-84-1)
- methyl 5-bromo-4-methylthiophene-3-carboxylate (CAS 1519255-52-7)
- 2-(5-Bromo-2-methylthiophen-3-yl)acetic acid (CAS 1536868-96-8)
Recommended Standards
- 4-Bromo-2,5-dimethylthiophene-3-carboxylic acid (CAS 518330-09-1)
- 4-Bromo-5-methylthiophene-2-carbohydrazide (CAS 478165-97-8)
- 3-Bromophenyl-methyl Sulfone (CAS 34896-80-5)
- 5-Bromo-2-(ethylthio)pyrimidin-4(3H)-one (CAS 7752-53-6)
- 4-(4-Phenoxyphenyl)-3-thiosemicarbazide (CAS 206761-85-5)
- Methyl (1s,4s)-4-fluorocyclohexane-1-carboxylate (CAS 2173015-02-4)
- (2S)-2-Amino-2-(3-bromophenyl)ethanol (CAS 209963-05-3)
- 3-Ethoxypyridine (CAS 14773-50-3)
- 4,8-Dibromo-2,6-naphthalenedicarboxylicacid (CAS 1966088-36-7)
- 6,7-Dihydro-5H-pyrrolo[3,4-b]pyridine Dihydrochloride (CAS 147740-02-1)
- Ethyl 5-nitrothiophene-2-carboxylate (CAS 5751-84-8)
- 1-(Tributylstannyl)isoquinoline (CAS 884658-29-1)
- Vilanterol Impurity 36 (CAS 452339-72-9)
- D-[Ala]24-Semaglutide (CAS CATO-C4X-2226126)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
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