1-chloro-4-fluoro-2-methoxy-5-methylbenzene CAS 211172-71-3
| CAS No. | 211172-71-3 |
| Molecular Formula | C8H8ClFO |
| Molecular Weight | 174.60 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 1-chloro-4-fluoro-2-methoxy-5-methylbenzene is closely related to a hydroxyl group, an ether linkage, fluorine/chlorine substitution, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
1-chloro-4-fluoro-2-methoxy-5-methylbenzene (CAS 211172-71-3), molecular formula C8H8ClFO and molecular weight 174.60 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 1-chloro-4-fluoro-2-methoxy-5-methylbenzene (C8H8ClFO) contains a hydroxyl group, an ether linkage, fluorine/chlorine 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 174.60 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.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C8H8ClFO |
| Molecular Weight | 174.60 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.) | 2017 |
| Halogen Content | F/Cl-containing |
Related chloro Standards
- 1-(3-Chloro-5-fluorobenzyl)hydrazine (CAS 1000805-95-7)
- (3-Chloro-2-fluorobenzyl)hydrazine (CAS 1000805-97-9)
- (R)-1-(4-Chloro-3-fluorophenyl)ethan-1-ol (CAS 1016646-05-1)
- (R)-1-(4-Chloro-2-fluorophenyl)ethan-1-ol (CAS 1016646-16-4)
- 5-Chloro-2-(N,N-dimethylamino)-3-fluoropyridine (CAS 1020253-19-3)
- 3-chloro-2-hydroxypropanesulphonicacid (CAS 107-57-3)
- 1-(2-Chloro-4-fluorophenyl)ethanol (CAS 112108-68-6)
- 1-Chloro-4-fluoro-2-methoxy-3-methylbenzene (CAS 1208076-24-7)
Recommended Standards
- 1-Chloro-4-ethoxy-2-fluorobenzene (CAS 289039-33-4)
- 2-(2-Chloro-4-fluorophenyl)ethanol (CAS 214262-87-0)
- 1-Chloro-3-fluoro-2-methoxy-4-methylbenzene (CAS 261762-80-5)
- 2-(2-Chloro-6-fluorophenyl)ethanol (CAS 214262-86-9)
- [1,4]Diazepane-1-Carboxylic Acid Methyl Ester Hydrochloride (CAS 1350362-09-2)
- tert-butyl 5-(pyrrolidine-1-carbonyl)imidazo[1,5-a]quinoline-3-carboxylate (CAS 170568-35-1)
- (S)-2-Amino-1-((S)-3-(isopropyl(methyl)amino)pyrrolidin-1-yl)propan-1-one (CAS 1401666-11-2)
- Niraparib Impurity 9 (CAS CATO-C4X-23299)
- 3-(Aminomethyl)-1-benzylpyridin-2(1H)-one (CAS 933757-00-7)
- N,N-dimethyl-2,3-dihydrobenzo[b]thiophene-2-carboxamide (CAS 1090428-15-1)
- Alizarin (CAS 72-48-0)
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