2-Chloro-5,9,9-triphenyl-9H-fluorene CAS 2356109-78-7
| CAS No. | 2356109-78-7 |
| Molecular Formula | C31H21Cl |
| Molecular Weight | 428.95 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 2-Chloro-5,9,9-triphenyl-9H-fluorene is closely related to chlorine substitution, a polycyclic aromatic system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 2-Chloro-5,9,9-triphenyl-9H-fluorene (CAS 2356109-78-7), a certified reference material (molecular formula C31H21Cl, MW 428.95 g/mol) for analytical method development and quality control.
Based on its molecular formula C31H21Cl, 2-Chloro-5,9,9-triphenyl-9H-fluorene contains chlorine substitution, a polycyclic aromatic system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 428.95 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C31H21Cl |
| Molecular Weight | 428.95 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at room temperature, 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) | 21.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1999 |
| Halogen Content | Cl-containing |
Related Chloro Standards
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- 3-[1-(5-Chloro-2-fluorobenzoyl)piperidin-4-yl]-4-[(4-methylphenyl)methyl]-4,5-dihydro-1H-1,2,4-triazol-5-one (CAS 1775518-39-2)
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Recommended Standards
- 2,2'-(4,6-Dichloro-5-methoxy-1,3-phenylene)bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolane) (CAS 1221589-79-2)
- 4-(4-tert-Butylphenyl)-2-[4-(3-chlorophenyl)piperazin-1-yl]-4-oxobutanoic acid (CAS 301194-14-9)
- Ziprasidone Impurity 59 (CAS CATO-C4X-124059)
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- N-(5-chloro-2-methylphenyl)guanidine methanesulfonate (CAS 1426290-73-4)
- 3-((6-Bromo-1H-benzo[d]imidazol-2-yl)amino)-N-butylbenzamide (CAS 917763-95-2)
- Bromhexine-d3 HCl (CAS CATO-CCAD304002)
- Apalutamide Impurity 116 (CAS CATO-C4X-2749116)
- 2-Chloro-N-(4-chlorobenzyl)benzamide (CAS 367481-66-1)
- Ceritinib Impurity 64 (CAS CATO-C4X-104864)
- 3-Aminoazetidine (CAS 102065-86-1)
- (3-Fluoro-5-(isopropoxymethyl)phenyl)boronic acid (CAS 1704063-75-1)
- 2-((4-(Methylsulfonyl)piperazin-1-yl)methyl)-4-phenylthiazole (CAS 1105216-21-4)
- Casein kinase II peptide Substrate (CAS 154444-98-1)
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