1,2,4-Trifluoro-3-methoxybenzene CAS 4920-34-7
| CAS No. | 4920-34-7 |
| Molecular Formula | C7H5F3O |
| Molecular Weight | 162.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 162.11 g/mol gives 1,2,4-Trifluoro-3-methoxybenzene distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
1,2,4-Trifluoro-3-methoxybenzene (CAS 4920-34-7) is a high-purity analytical reference standard with the molecular formula C7H5F3O and a molecular weight of 162.11 g/mol.
Structurally, 1,2,4-Trifluoro-3-methoxybenzene (C7H5F3O) contains a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 162.11 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.
As a certified reference material (CRM), 1,2,4-Trifluoro-3-methoxybenzene 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 | C7H5F3O |
| Molecular Weight | 162.11 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| 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.) | 1958 |
| Halogen Content | F-containing |
Related Trifluoro Standards
- 3,5,6-trifluoro-4-methylpyridin-2-amine (CAS 16857-78-6)
- 1,2,3-Trifluoro-4-methoxybenzene (CAS 203245-16-3)
- 2,5,5-Trifluoro-1-methyl-2,5-dihydro-1H-pyrrole-2-carbonitrile (CAS 363152-97-0)
- 3,4,6-Trifluoro-1,2-benzenediamine (CAS 363-74-6)
- 2,5,6-Trifluoro-3-(hydroxymethyl)pyridine (CAS 1262415-64-4)
- 2,2,2-Trifluoro-1-(1H-pyrrol-3-yl)ethanone (CAS 130408-89-8)
- (2,3,6-Trifluoro-4-pyridyl)methanol (CAS 852098-48-7)
- (2,3,6-Trifluoro-pyridin-4-yl)-hydrazine (CAS 849937-92-4)
Recommended Standards
- 2,3,5-Trifluoroanisole (CAS 4920-36-9)
- 1-(Difluoromethoxy)-3-fluorobenzene (CAS 34888-08-9)
- 2,3,5-Trifluorobenzene-1,4-diamine (CAS 512778-65-3)
- 1-(Difluoromethoxy)-2-fluorobenzene (CAS 97963-49-0)
- 3-Chloro-5-(pentafluoro-λ6-sulfanyl)benzonitrile (CAS 159727-28-3)
- 3-(3,4-Difluorobenzenesulfonamido)benzoic acid (CAS 329268-45-3)
- 2-(2-(2-(Dodecyloxy)ethoxy)ethoxy)acetamide (CAS 36749-80-1)
- Tetramethylrhodamine-5-maleimide (CAS 174568-67-3)
- 8-Bromo-[1,2,4]triazolo[1,5-a]pyridine-2-carboxylic acid (CAS 1159813-05-4)
- 4-((2,4-Dichlorobenzyl)thio)aniline (CAS 712297-76-2)
- 2-Methylnaphth[1,2-d]oxazole (CAS 85-15-4)
- 3-(4-Chlorophenyl)-4-oxo-4-phenylbutanoic acid (CAS 433330-74-6)
- 4-(1,4-Diazepane-1-carbonyl)-n,n-dimethylaniline (CAS 1017031-33-2)
- Acetyl Hexapeptide-38 (CAS 1400634-44-7)
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