One practised a form of civil disobedience in compound (6)
I believe the answer is:
isatin
'compound' is the definition.
(I've seen this before)
'one practised a form of civil disobedience in' is the wordplay.
I cannot really understand how this works, but
'one' could be 'i' (Roman numeral) and 'i' is located in the answer.
'a' is present in the answer.
'in' is found in the answer.
The remaining letters 'st' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for isatin that I've seen before include "chemical derived from indigo" , "compound" , "Dye ingredient" .)