3-Bromo-5-methyl-2-phenylthiophene CAS 61285-23-2
| CAS No. | 61285-23-2 |
| Molecular Formula | C11H9BrS |
| Molecular Weight | 253.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-Bromo-5-methyl-2-phenylthiophene (CAS 61285-23-2), molecular formula C11H9BrS and molecular weight 253.16 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 3-Bromo-5-methyl-2-phenylthiophene (C11H9BrS) is characterized by sulfur-containing functionality, 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).
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), 3-Bromo-5-methyl-2-phenylthiophene 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 | C11H9BrS |
| Molecular Weight | 253.16 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 |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1974 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 1 |
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Recommended Standards
- 3-(3-(Bromomethyl)phenyl)thiophene (CAS 89929-85-1)
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- 6-Butyl-2-(3-thienyl)-1,3,6,2-dioxazaborocane (CAS 1379794-75-8)
- 2-[4-(Bromomethyl)phenyl]thiophene (CAS 81443-46-1)
- (S)-1-Methoxy-1-oxopropan-2-yl benzoate (CAS 52216-65-6)
- 3-(dimethylamino)-2-phenylpropanoic acid hydrochloride (CAS 858785-97-4)
- (2-Cyclopropyl-4-oxo-1,4-dihydroquinazolin-7-yl)boronic acid (CAS 2857815-67-7)
- Regadenoson Impurity 1 (CAS 313348-29-7)
- 6-Chloro-1H-pyrrolo[2,3-b]pyridine-4-carboxylic acid (CAS 1167056-92-9)
- [4,5-Dimethyl-2-(3-oxazol-2-yl-phenoxymethyl)-cyclohexa-1,4-dienyl]-methoxyimino-acetic acid methyl ester (CAS 1230681-19-2)
- 1,3,4-Thiadiazole-2-carbonyl chloride (CAS 104473-08-7)
- 3-Nitro-4-(p-tolyloxy)benzyl 3,4-dichlorobenzoate (CAS 338960-69-3)
- 2-(4-bromophenyl)acetohydrazide (CAS 57676-50-3)
- (Glu9)-Exenatide (2-39) trifluoroacetate salt (CAS 196109-34-9)
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