9,9-Bis(4-bromophenyl)-9H-fluorene CAS 128406-10-0
| CAS No. | 128406-10-0 |
| Molecular Formula | C25H16Br2 |
| Molecular Weight | 476.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 9,9-Bis(4-bromophenyl)-9H-fluorene.
CATO supplies 9,9-Bis(4-bromophenyl)-9H-fluorene (CAS 128406-10-0), a certified reference material (molecular formula C25H16Br2, MW 476.20 g/mol) for analytical method development and quality control.
Structurally, 9,9-Bis(4-bromophenyl)-9H-fluorene (C25H16Br2) contains bromine substitution, a polycyclic aromatic system. The molecule exhibits a degree of unsaturation (DBE) of 17.0, corresponding to approximately 17 ring(s) or double-bond equivalent(s). With a molecular weight of 476.20 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 9,9-Bis(4-bromophenyl)-9H-fluorene under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C25H16Br2 |
| Molecular Weight | 476.20 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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) | 17.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
| Halogen Content | Br-containing |
Related Bis Standards
- 9,9-Bis(3-bromophenyl)-9H-fluorene (CAS 1211547-22-6)
- 1,2-Bis(2-bromophenyl)-5,6,7,8-tetrahydroquinazoline-4(1H)-thione (CAS 62721-85-1)
- Ethyl 2-(2-((4-(4-bromophenyl)-5-(pyridin-3-yl)-4H-1,2,4-triazol-3-yl)thio)acetamido)acetate (CAS 578754-67-3)
- N-(3-Bromophenyl)-2-(1,1-dioxidothiomorpholino)-3-(1H-indol-3-yl)propanamide (CAS 478040-57-2)
- N-(4-bromophenyl)-N-phenyl-[1,1':3',1''-terphenyl]-5'-amine (CAS 1290039-79-0)
- 6-{[(4-bromophenyl)sulfanyl]methyl}-2-{[(4-methoxyphenyl)methyl]sulfanyl}-N,N-dimethylpyrimidin-4-amine (CAS 478261-65-3)
- 3-(4-(4-Bromophenyl)-5-((2-chloro-6-fluorobenzyl)thio)-4H-1,2,4-triazol-3-yl)pyridine (CAS 678541-90-7)
- 4-(4-(4-Bromophenyl)-5-((2-chloro-6-fluorobenzyl)thio)-4H-1,2,4-triazol-3-yl)pyridine (CAS 477330-23-7)
Recommended Standards
- BTF-2ThBr (CAS 1352921-50-6)
- 6-Bromo-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1-tosyl-1H-indole (CAS 1315354-68-7)
- 2,7-Dibromo-9,9-diphenylfluorene (CAS 186259-63-2)
- (((4,4'-Disulfanediylbis(butanoyl))bis(azanediyl))bis(3,1-phenylene))diboronic acid (CAS 210907-57-6)
- 5-Bromo-2,3-diiodo-1-(phenylsulfonyl)-1H-pyrrolo[2,3-b]pyridine (CAS 1299607-59-2)
- 3-Methyl-1-(4-phenylbut-3-en-1-yl)piperazine hydrochloride (CAS 1353990-90-5)
- 4-(4-Fluorophenyl)-2-methyl-3-(methylthio)-3,5-dihydro-1H-pyrrolo[3,4-c]pyridine-1,6(2H)-dione (CAS 1269532-53-7)
- cis-3-((tert-Butyldimethylsilyl)oxy)-3-ethylcyclobutanecarboxylic acid (CAS 2730887-88-2)
- 6-Oxo-1-[3-(trifluoromethyl)benzyl]-1,6-dihydro-3-pyridinecarbohydrazide (CAS 477852-89-4)
- 5-bromo-3-chloro-2-methoxybenzoic acid (CAS 722497-30-5)
- 4-Methyl-2H-chromene-2-thione (CAS 25624-32-2)
- 4-Acetylpyrazolo[1,5-a]pyridine (CAS 51143-67-0)
- Diethyl 2-(cyanomethyl)-2-phenylmalonate (CAS 92647-37-5)
- TAT 14 Peptide (Nrf2 Activator III) (CAS 1362661-34-4)
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