4-Hexadecyl-2,6,6-trimethyl-1,3,6,2-dioxazaphosphocan-6-ium 2-oxide- 4-Hexadecyl-2,6,6-trimethyl-1,3,6lambda~5~,2-dioxazaphosphocane 2-oxide hydrobromide AIDS-158833 AIDS158833 NSC678145 (BROMIDE SALT)