4-Chloro-1-methyl-2-(trifluoromethyl)benzene CAS 1839-92-5
| CAS No. | 1839-92-5 |
| Molecular Formula | C8H6ClF3 |
| Molecular Weight | 194.58 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
4-Chloro-1-methyl-2-(trifluoromethyl)benzene (CAS 1839-92-5), molecular formula C8H6ClF3 and molecular weight 194.58 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to fluorine/chlorine substitution, an aromatic ring system, 4-Chloro-1-methyl-2-(trifluoromethyl)benzene is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 194.58 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.
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 | C8H6ClF3 |
| Molecular Weight | 194.58 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 |
| 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.) | 1957 |
| Halogen Content | F/Cl-containing |
Related Chloro Standards
- 2-Chloro-6-methylbenzotrifluoride 1-Chloro-3-methyl-2-(trifluoromethyl)benzene 112641-25-5 (CAS 112641-25-5)
- 2-Chloro-4-(1,1-difluoroethyl)-1-fluorobenzene (CAS 1138444-93-5)
- 1-Chloro-3-methyl-5-(trifluoromethyl)benzene (CAS 1214384-22-1)
- 1-Chloro-2-(difluoromethyl)-3-fluoro-4-methylbenzene (CAS 1221272-76-9)
- 4-Chloro-2-methylbenzotrifluoride (CAS 13630-22-3)
- 1-Chloro-2-(2,2,2-trifluoroethyl)benzene (CAS 145914-05-2)
- (1-Chloro-2,2,2-trifluoroethyl)benzene (CAS 384-65-6)
- 1-(2-Chloro-1,1-difluoroethyl)-4-fluorobenzene (CAS 2091146-42-6)
Recommended Standards
- 6'-Bromo-1',3'-dihydrospiro[cyclohexane-1,2'-imidazo[4,5-b]pyridine] (CAS 161263-64-5)
- 1-Chloro-2-methyl-3-(trifluoromethyl)benzene (CAS 93242-63-8)
- 2-(2-Chloroethyl)-1,3,5-trifluorobenzene (CAS 1260764-21-3)
- 1-Chloro-2-methyl-4-trifluoromethylbenzene (CAS 97399-46-7)
- N-(1-Phenylcyclohexyl)-2-ethoxyethanamine Hydrochloride (CAS 1798021-89-2)
- 3-Isobutyl-1-Methylxanthine (CAS 28822-58-4)
- 7-(Trifluoromethyl)benzo[d]oxazole-2(3H)-thione (CAS 217095-69-7)
- (3R,4R)-1-(tert-butoxycarbonyl)-4-fluoropyrrolidine-3-carboxylic acid (CAS 1903828-90-9)
- Ethyl 3-(2-{[(tert-butoxy)carbonyl]amino}acetamido)benzoate (CAS 1427160-59-5)
- Benzyl ((3-aminotetrahydrofuran-3-yl)methyl)carbamate (CAS 1158760-33-8)
- (S)-1-(But-3-en-1-yl)pyrrolidine-2-carboxylic acid (CAS 107326-39-6)
- Methyl 3-oxocyclopent-1-enecarboxylate (CAS 108384-35-6)
- 3-Methyl-4-(trifluoromethoxy)picolinaldehyde (CAS 886372-33-4)
- Semaglutide Impurity 75 (CAS CATO-C4X-2226175)
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