1-Bromo-4-(cyclopentyloxy)-2,3-difluorobenzene CAS 1881288-18-1
| CAS No. | 1881288-18-1 |
| Molecular Formula | C11H11BrF2O |
| Molecular Weight | 277.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 1-Bromo-4-(cyclopentyloxy)-2,3-difluorobenzene is closely related to a hydroxyl group, an ether linkage, fluorine/bromine substitution, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 1-Bromo-4-(cyclopentyloxy)-2,3-difluorobenzene (CAS 1881288-18-1), a certified reference material (molecular formula C11H11BrF2O, MW 277.11 g/mol) for analytical method development and quality control.
Structurally, 1-Bromo-4-(cyclopentyloxy)-2,3-difluorobenzene (C11H11BrF2O) contains a hydroxyl group, an ether linkage, fluorine/bromine 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 277.11 g/mol, it falls into the medium-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.
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 | C11H11BrF2O |
| Molecular Weight | 277.11 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| 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.) | 1995 |
| Halogen Content | F/Br-containing |
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Recommended Standards
- 8-Bromo-1,2-dihydro-3H-benzo[f]chromen-3-one (CAS 180919-32-8)
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- 2-Bromo-6-(4,4-difluoropiperidin-1-yl)pyridine (CAS 1779133-48-0)
- (4-Bromophenyl)(2-hydroxyphenyl)methanone (CAS 2038-92-8)
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- Methyl azetidin-3-ylcarbamate (CAS 1263281-31-7)
- 2-Bromo-3-pyridinecarbaldehyde (CAS 128071-75-0)
- 5-Cyanothiazole-4-carboxylic acid (CAS 1259077-53-6)
- Vilanterol Impurity 69 (CAS 2514942-86-8)
- 3-Benzyl-8-methyl-1,3-diazaspiro[4.5]decane-2,4-dione (CAS 849195-77-3)
- 1-(Tert-butyl) 3-methyl (3S,4S)-4-(5,6-dimethoxypyridin-2-yl)pyrrolidine-1,3-dicarboxylate (CAS 1217674-57-1)
- Ezetimibe Impurity 64 (CAS CATO-C4X-109864)
- Des-Gln19-Tirzepatide (CAS CATO-CPTD788954)
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