2-(4-Bromobenzenesulfonyl)-3-methylbutanoic acid CAS 134649-66-4
| CAS No. | 134649-66-4 |
| Molecular Formula | C11H13BrO4S |
| Molecular Weight | 321.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-(4-Bromobenzenesulfonyl)-3-methylbutanoic acid (CAS 134649-66-4), molecular formula C11H13BrO4S and molecular weight 321.19 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 2-(4-Bromobenzenesulfonyl)-3-methylbutanoic acid (C11H13BrO4S) 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 its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 2-(4-Bromobenzenesulfonyl)-3-methylbutanoic 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 | C11H13BrO4S |
| Molecular Weight | 321.19 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1995 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 1 |
Related Bromobenzenesulfonyl Standards
- Methyl 4-(4-bromobenzenesulfonyl)butanoate (CAS 163496-41-1)
- 1-(3-Bromobenzenesulfonyl)-3-methoxypyrrolidine (CAS 1967972-44-6)
- 5-(4-Bromobenzenesulfonyl)-4-methyl-1,2,3-thiadiazole (CAS 338978-76-0)
- 4-[(4-Bromobenzenesulfonyl)methyl]piperidine (CAS 1706450-64-7)
- 1-(4-Bromobenzenesulfonyl)-3-cyclopropyl-1H-pyrazole (CAS 956977-35-8)
- 1-(4-Bromobenzenesulfonyl)cyclopentane-1-carboxylic acid (CAS 875157-48-5)
- 4-(4-Bromobenzenesulfonyl)piperazine-1-carbaldehyde (CAS 928888-65-7)
- 1-[2-(4-bromobenzenesulfonyl)ethyl]piperazine (CAS 1094558-34-5)
Recommended Standards
- 2,5-Bis(2,2,2-trifluoroethoxy)benzoic Acid-d3 (CAS 1330172-70-7)
- 3-Bromo-4-hydrazinyl-5-(pyrrolidin-1-ylsulfonyl)pyridine (CAS 1352507-96-0)
- 2-(5-Bromo-pyridin-2-yl)-4-methanesulfonyl-morpholine (CAS 1316223-19-4)
- 5-Bromo-4-(piperidin-1-yl)pyridine-3-sulfonic acid (CAS 1352508-06-5)
- (E)-3-(Thiazol-4-yl)acrylaldehyde (CAS 185947-65-3)
- 4-Bromo-7-methoxy-1H-indole-3-carbaldehyde (CAS 1227572-66-8)
- (4,5-Dichloro-6-oxopyridazin-1(6H)-yl)methyl 2-chloroacetate (CAS 178211-02-4)
- 898774-88-4 1-(4-Chloro-3-fluorophenyl)-3-(3-methoxyphenyl)propan-1-one DTXSID90644235 (CAS 898774-88-4)
- 3-(3-Fluorophenyl)propan-1-amine acetic acid salt (CAS 1410792-06-1)
- 1-(4-Methylphenyl)-5-(propan-2-yl)-1h-pyrazole-4-carboxylic acid (CAS 1003750-79-5)
- 3-Bromo-5-cyclopropoxypicolinic acid (CAS 1243446-69-6)
- (3-Acetyl-2-methyl-indol-1-yl)-acetic acid (CAS 717835-22-8)
- Bleomycin A2 Sulfate (CAS 41432-97-7)
- Semaglutide impurity 205 (CAS CATO-C4X-2226205)
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