157716-52-4 4-((Hydroxy(octadecyloxy)phosphinyl)oxy)-1,1-dimethylpiperidinium inner salt D 21266 NSC 639966 Perifosine Perifosine [INN] Piperidinium, 4-((hydroxy(octadecyloxy)phosphinyl)oxy)-1,1-dimethyl-, inner salt