Organic chemical derived from trees (5)

I believe the answer is:

ester

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'organic chemical' is the definition.
'ester' can be an answer for 'chemical' (I've seen this before). I'm unsure of the 'organic' bit.

'derived from trees' is the wordplay.
'derived from' indicates anagramming the letters.
'trees' with letters rearranged gives 'ESTER'.

Can you help me to learn more?

(Other definitions for ester that I've seen before include "radical" , "Organic compound, rhymes with court joker" , "Organic chemical compound" , "Compound formed from acid and alcohol" , "Fat" .)

I've seen this clue in the Sydney Morning Herald.

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