1-(3,4-Dichloro-5-(trifluoromethyl)phenyl)ethan-1-one CAS 1261645-17-3
| CAS No. | 1261645-17-3 |
| Molecular Formula | C9H5Cl2F3O |
| Molecular Weight | 257.04 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
1-(3,4-Dichloro-5-(trifluoromethyl)phenyl)ethan-1-one (CAS 1261645-17-3), molecular formula C9H5Cl2F3O and molecular weight 257.04 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 1-(3,4-Dichloro-5-(trifluoromethyl)phenyl)ethan-1-one (C9H5Cl2F3O) contains a hydroxyl group, an ether linkage, fluorine/chlorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 257.04 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.
Physical & Chemical Properties
| Molecular Formula | C9H5Cl2F3O |
| Molecular Weight | 257.04 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | F/Cl-containing |
Related Dichloro Standards
- 1-(2,6-Dichloro-4-(trifluoromethyl)phenyl)ethanone (CAS 175205-88-6)
- 4,6-Dichloro-2-(1-(trifluoromethyl)cyclopropyl)pyrimidine (CAS 2287861-84-9)
- 2,4-Dichloro-8-fluorobenzofuro[3,2-d]pyrimidine (CAS 1196151-94-6)
- 3,6-Dichloro-2-(difluoromethoxy)benzoic acid (CAS 1803712-69-7)
- 2,4-Dichloro-5-(difluoromethoxy)benzoic acid (CAS 1803787-97-4)
- 2,4-Dichloro-3-(difluoromethoxy)benzoic acid (CAS 1803788-10-4)
- 2,5-Dichloro-4-(difluoromethoxy)benzoic acid (CAS 1803817-86-8)
- 2,3-Dichloro-6-(difluoromethoxy)benzoic acid (CAS 1803830-94-5)
Recommended Standards
- 5-Bromo-2-oxo-2,3-dihydro-1H-pyrrolo[2,3-b]pyridine-6-carboxylic acid (CAS 1227267-00-6)
- 6-Bromo-4-nitroisoindolin-1-one (CAS 1269291-06-6)
- 5-bromo-2-methyl-7-nitro-1,3-benzoxazole (CAS 1226072-60-1)
- 4-Bromo-6-nitroisoindolin-1-one (CAS 1269293-73-3)
- (E)-Methyl 4-(4-bromophenyl)but-2-enoate (CAS 1310810-17-3)
- N-[4-amino-3-(trifluoromethyl)phenyl]cyclopropanecarboxamide hydrochloride (CAS 2060021-70-5)
- n-(4-Cyanophenyl)-5-methylisoxazole-3-carboxamide (CAS 878566-50-8)
- Thio-PEG12-acid (CAS 1032347-93-5)
- 1,5-Bis(5-chloro-2-methylthiophen-3-yl)pentane-1,5-dione (CAS 219537-95-8)
- 38050-71-4 9-Methoxy-9-borabicyclo[3.3.1]nonane B-Methoxy-9-BBN solution (CAS 38050-71-4)
- 1H-Indene, polymer with ethenylbenzene (CAS 26102-44-3)
- 2-Aminoacetonitrile sulfate(2:1) (CAS 5466-22-8)
- 6-Amino-5-(difluoromethyl)-4-iodonicotinonitrile (CAS 1805111-45-8)
- Semaglutide impurity 274 (CAS CATO-C4X-2226274)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com