1H-Naphtho(2,1-b)pyran-1-one, 3-(1-piperidinyl)- 3-(1-Piperidinyl)-1H-naphtho(2,1-b)pyran-1-one 3-(N-Piperidil)-1-oxo-1H-nafto(2,1-b)pirano [Italian] 35299-83-3 5-20-03-00396 (Beilstein Handbook Reference) BRN 1252586