Cyclopentane 287-92-3 68476-56-2 29680_FLUKA NSC60213 Pentamethylene WLN: L5TJ 287687_ALDRICH Hydrocarbons, cyclic C5 and C6 29682_FLUKA InChI=1/C5H10/c1-2-4-5-3-1/h1-5H EINECS 270-696-0 Cyclopentane [UN1146] [Flammable liquid] EINECS 206-016-6 HSDB 62 NSC 60213 UN1146 CHEBI:23492 459747_ALDRICH 270601_ALDRICH NCGC00091776-01