1-Nitroso-3-piperidinol 3-PIPERIDINOL, N-NITROSO- 3-Piperidinol, 1-nitroso- 5-21-01-00050 (Beilstein Handbook Reference) 55556-85-9 BRN 1525252 N-Nitroso-3-hydroxypiperidine Nitroso-3-piperidinol