abbr. for adamantyl-1,2-dioxetane phosphate
or 3-(4-methoxyspiro[1,2-dioxetane-3,2′-tricyclo-[3.3.1.
3,7]decan]-4yl)-phenylphosphate. A chemilumigenic substrate for alkaline phosphatase forming the basis of sensitive nonradioactive labelling systems used in association with Northern, Southern, and Western blotting.