Chap takes moron away from compound (7)
I believe the answer is:
hormone
'compound' is the definition.
(I've seen this before)
'chap takes moron away' is the wordplay.
'chap' becomes 'he'.
'takes' indicates putting letters inside.
'away' is an anagram indicator (letters move away from their original places).
'moron' anagrammed gives 'ormon'.
'he' going around 'ormon' is 'HORMONE'.
'from' acts as a link.
(Other definitions for hormone that I've seen before include "insulin perhaps" , "Growth secretion" , "Internal secretion - moorhen (anag)" , "Secretion from endocrine gland" , "Substance that stimulates cells in moorhen" .)