4,4''-Difluoro-5'-(4-fluorophenyl)-1,1':3',1''-terphenyl CAS 448-60-2
| CAS No. | 448-60-2 |
| Molecular Formula | C24H15F3 |
| Molecular Weight | 360.37 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.
4,4''-Difluoro-5'-(4-fluorophenyl)-1,1':3',1''-terphenyl (CAS 448-60-2), molecular formula C24H15F3 and molecular weight 360.37 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 4,4''-Difluoro-5'-(4-fluorophenyl)-1,1':3',1''-terphenyl (C24H15F3) contains fluorine substitution, a polycyclic aromatic system. The molecule exhibits a degree of unsaturation (DBE) of 16.0, corresponding to approximately 16 ring(s) or double-bond equivalent(s). With a molecular weight of 360.37 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C24H15F3 |
| Molecular Weight | 360.37 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | F-containing |
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Recommended Standards
- 4,4'-(1,5-Dihydrobenzo[1,2-d:4,5-d']diimidazole-2,6-diyl)dibenzonitrile (CAS 2247996-19-4)
- Methyl 7-[3-(benzyloxy)phenyl]-[1,2,4]triazolo[1,5-a]pyrimidine-5-carboxylate (CAS 882747-71-9)
- 2-Imino-N-methyl-5-oxo-1-(pyridin-3-ylmethyl)-2,5-dihydro-1H-dipyrido[1,2-a:2',3'-d]pyrimidine-3-carboxamide (CAS 510761-47-4)
- tert-Butyl 2-(2-(trifluoromethoxy)benzyl)piperazine-1-carboxylate (CAS 886773-88-2)
- 2-Bromo-4-methoxythiophene (CAS 78282-35-6)
- 3-(Hydroxymethyl)-4-methoxyphenol (CAS 87633-45-2)
- (S)-1-(5-chloro-2-fluorophenyl)-2-methoxyethan-1-amine (CAS 1270076-06-6)
- Tamsulosin EP Impurity A HCl (CAS 918867-88-6)
- 3-(4-Fluoro-2-nitrophenoxy)-N-(4-sulfamoylphenyl)thiophene-2-carboxamide (CAS 303152-74-1)
- 2-{[1-(4-bromophenyl)-1h-imidazol-2-yl]sulfanyl}acetic acid (CAS 851814-13-6)
- 2-Chloro-3-(trifluoromethyl)phenylboronic Acid (CAS 957061-11-9)
- 6,7-Difluoroquinoxaline (CAS 215734-58-0)
- (2R,3R,4S,5R)-2-Amino-3,4,5,6-tetrahydroxyhexanal (S)-5-oxopyrrolidine-2-carboxylate (CAS 93804-92-3)
- Semaglutide impurity 23 (CAS CATO-C4X-222623)
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