292-64-8 29600_FLUKA Octamethylene Cyclooctan InChI=1/C8H16/c1-2-4-6-8-7-5-3-1/h1-8H 29598_FLUKA AI3-26694 EINECS 206-031-8 NSC 72426 Cyclooctane NSC72426 C109401_ALDRICH