2-(1-Pyrrolidinyl)bicyclo(3.3.1)nonan-9-one 4-20-00-00172 (Beilstein Handbook Reference) 6335-43-9 BICYCLO(3.3.1)NONAN-9-ONE, 2-(1-PYRROLIDINYL)- BRN 0154687 NSC 29649