9-(Bromofluoromethylene)-9H-fluorene CAS 781-57-7
| CAS No. | 781-57-7 |
| Molecular Formula | C14H8BrF |
| Molecular Weight | 275.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C14H8BrF, 9-(Bromofluoromethylene)-9H-fluorene contains fluorine/bromine substitution, a polycyclic aromatic system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 275.12 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO supplies 9-(Bromofluoromethylene)-9H-fluorene (CAS 781-57-7), a certified reference material (molecular formula C14H8BrF, MW 275.12 g/mol) for analytical method development and quality control.
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 | C14H8BrF |
| Molecular Weight | 275.12 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | F/Br-containing |
Recommended Standards
- 7-Bromo-1H-indole-3-sulfonamide (CAS 2138184-19-5)
- ethyl 2-bromoimidazo[2,1-b]thiazole-6-carboxylate (CAS 80353-98-6)
- 6-Bromo-3-(methylsulfonyl)-1H-indazole (CAS 651780-43-7)
- ethyl 2-bromoimidazo[4,3-b][1,3]thiazole-7-carboxylate (CAS 901122-44-9)
- 2-(2-(4-Bromophenyl)-2-oxoethylidene)-5-(p-tolyl)furan-3(2H)-one (CAS 139292-29-8)
- Methyl 3-methyl-[5,5'-biisoxazole]-4-carboxylate (CAS 175277-13-1)
- 6-Bromo-2,3-dimethylquinoxaline (CAS 18470-23-0)
- 1,7-Dihydro-dipyrrolo[2,3-b:3',2'-e]pyridine (CAS 1000342-79-9)
- Dihydroresveratrol (CAS 58436-28-5)
- N-([1,1':4',1''-terphenyl]-2-yl)-9,9-dimethyl-9H-fluoren-2-amine (CAS 2230885-89-7)
- Methyl 6-methyl-7H-pyrrolo[2,3-d]pyrimidine-2-carboxylate (CAS 1638766-97-8)
- (3aS,6R,7aS)-6-Ethyl-1-oxo-2,3,3a,6,7,7a-hexahydro-1H-indene-4-carboxylic acid (CAS 62251-98-3)
- 7-Fluoroindole-3-acetic Acid (CAS 170893-02-4)
- Neuroendocrine Regulatory Peptide-1 (rat) (CAS 954420-51-0)
Why CATO?
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