(5-Bromo-2-thienyl)(4-methylphenyl)methanone CAS 56824-70-5
| CAS No. | 56824-70-5 |
| Molecular Formula | C12H9BrOS |
| Molecular Weight | 281.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies (5-Bromo-2-thienyl)(4-methylphenyl)methanone (CAS 56824-70-5), a certified reference material (molecular formula C12H9BrOS, MW 281.17 g/mol) for analytical method development and quality control.
Structurally, (5-Bromo-2-thienyl)(4-methylphenyl)methanone (C12H9BrOS) contains sulfur-containing functionality, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 281.17 g/mol, it falls into the medium-molecular-weight range. 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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C12H9BrOS |
| Molecular Weight | 281.17 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1973 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 1 |
Related Bromo Standards
- 2-Bromo-1-(5-phenylthiophen-2-yl)ethan-1-one (CAS 10531-43-8)
- 4-Bromo-1-(2-methanesulfonylethyl)-3,5-dimethyl-1h-pyrazole (CAS 1247899-26-8)
- 2-Bromo-1-(4-(thiophen-2-yl)phenyl)ethan-1-one (CAS 128746-80-5)
- ethyl 2-bromo-4H-pyrrolo[2,3-d]thiazole-5-carboxylate (CAS 1379315-43-1)
- (3-Bromo-4-methylphenyl)(thiophen-2-yl)methanone (CAS 81140-51-4)
- 2-Bromo-1-(4-(thiophen-3-yl)phenyl)ethan-1-one (CAS 879896-53-4)
- 5-Bromo-2-(phenylmethylthio)pyrimidine (CAS 79686-18-3)
- 5-Bromo-3-(phenylthio)pyridin-2-amine (CAS 953045-27-7)
Recommended Standards
- 1-((3-Bromothiophen-2-yl)methylene)-2-phenylhydrazine (CAS 838820-76-1)
- 1-(5-bromothiophen-2-yl)-2-phenylethan-1-one (CAS 56824-81-8)
- 1-[4-(3-Bromothien-2-yl)phenyl]ethanone (CAS 937796-01-5)
- 2-{[(2-bromophenyl)methyl]sulfanyl}pyrimidine (CAS 1249407-58-6)
- 2-Ethyl-4-(2-oxopiperidin-1-yl)benzaldehyde (CAS 1260764-38-2)
- 1-(2-Fluorophenyl)-2-(methylamino)ethan-1-ol (CAS 1017417-72-9)
- Lithium 2-(pyrimidin-4-yl)acetate (CAS 1956356-31-2)
- 1-Bromoheptane-6,6,7,7,7-d5 (CAS 1219805-66-9)
- 1-(4-Methylthiazol-2-yl)cyclohexan-1-amine (CAS 1176104-06-5)
- 1-Acetyl-3-bromo-7-methylindole (CAS 1375064-60-0)
- 4-(Ethylthio)-2-hydroxybutanamide (CAS 98278-23-0)
- N-(2-hydroxyethyl)-4-(pyrrolidin-1-yl)benzamide (CAS 952183-27-6)
- 2-(Chloromethyl)-4-phenylnicotinonitrile (CAS 817555-70-7)
- Semaglutide impurity 29 (CAS 1188328-22-4)
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