Bromocyclopentane is an alkyl halide with the chemical formula C5H9Br. It is a colorless to light yellow liquid at standard temperature and pressure.

Bromocyclopentane
Names
Preferred IUPAC name
Bromocyclopentane
Other names
Cyclopentyl Bromide
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.004.813 Edit this at Wikidata
  • InChI=1S/C5H9Br/c6-5-3-1-2-4-5/h5H,1-4H2 checkY
    Key: BRTFVKHPEHKBQF-UHFFFAOYSA-N checkY
  • InChI=1S/C5H9Br/c6-5-3-1-2-4-5/h5H,1-4H2
    Key: BRTFVKHPEHKBQF-UHFFFAOYSA-N
  • C1CCC(C1)Br
Properties
C5H9Br
Molar mass 149.031 g·mol−1
Appearance Colorless or pale yellow liquid
Density 1.473 g/cm3
Boiling point 138 °C (280 °F; 411 K)
Hazards
Flash point 42 °C (108 °F; 315 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Bromocyclopentane is a building block used in the synthesis of filaminast.[citation needed]

Bromocyclopentane is reacted with magnesium turnings in dry tetrahydrofuran making cyclopentyl Grignard reagent, a main precursor in the synthesis of Ketamine.