4-Bromo-3-fluorobenzenethiol CAS 942473-86-1
| CAS No. | 942473-86-1 |
| Molecular Formula | C6H4BrFS |
| Molecular Weight | 207.06 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to sulfur-containing functionality, fluorine/bromine substitution, an aromatic ring system, 4-Bromo-3-fluorobenzenethiol is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 207.06 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.
4-Bromo-3-fluorobenzenethiol (CAS 942473-86-1), molecular formula C6H4BrFS and molecular weight 207.06 g/mol, is a CATO reference standard with documented purity and traceability.
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 | C6H4BrFS |
| Molecular Weight | 207.06 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | F/Br-containing |
| Sulfur Atoms | 1 |
Related Bromo Standards
- 4-Bromo-2-fluorobenzenethiol (CAS 174414-93-8)
- 3-Bromo-5-fluorobenzenethiol (CAS 179161-18-3)
- 2-Bromo-3-fluorobenzenethiol (CAS 877868-83-2)
- 2-Bromo-4-fluorobenzene-1-thiol (CAS 773853-92-2)
- 2-Bromo-5-fluorobenzenethiol (CAS 55389-14-5)
- 2-Bromo-6-fluorobenzene-1-thiol (CAS 59594-64-8)
- 3-Bromo-2-fluorobenzenethiol (CAS 871353-12-7)
- 3-Bromo-4-fluorobenzenethiol (CAS 942473-85-0)
Recommended Standards
- 4,6-Dichloro-2-isopropylpyrimidin-5-ol (CAS 2322576-36-1)
- 5-Bromo-2-fluorobenzenethiol (CAS 321596-25-2)
- 4,6-Dichloro-2-(ethoxymethyl)pyrimidine (CAS 3122-82-5)
- S-sec-Butyl Phosphorothioic Dichloride (CAS 63525-20-2)
- Trifluoro-methanesulfonic acid dimethyl(phenylmethyl)silyl ester (CAS 1612798-07-8)
- (S)-1-(3-(Ethyl(2-hydroxyethyl)amino)pyrrolidin-1-yl)ethanone (CAS 1354002-61-1)
- (R)-4-(Aminomethyl)-5-(propylthio)-5,6,7,8-tetrahydroquinolin-3-ol (CAS 88889-08-1)
- Methyl 3-bromo-1H-pyrrolo[2,3-c]pyridine-5-carboxylate (CAS 2091796-77-7)
- Ac-Gly-Lys-OMe acetate salt (CAS 14752-92-2)
- 4,4,5,5-Tetramethyl-2-(2,2,2-trifluoroethyl)-1,3,2-dioxaborolane (CAS 1450638-17-1)
- Clopidogrel Impurity 68 (CAS 6212-33-5)
- tert-butyl 3-[(3S)-3-hydroxypyrrolidin-1-yl]azetidine-1-carboxylate (CAS 1257293-73-4)
- (3-(Hydroxymethyl)pyrrolidin-1-yl)(5-methylisoxazol-4-yl)methanone (CAS 1250780-79-0)
- Serpent Peptide (CAS 823202-99-9)
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