Daniel ran off, stimulated by this? (9)

I believe the answer is:

adrenalin

I'm a little stuck... Click here to teach me more about this clue!

'stimulated by this?' is the definition.
The definition suggests a singular noun which matches the answer.

'daniel ran off' is the wordplay.
'off' is an anagram indicator.
'daniel'+'ran'='danielran'
'danielran' with letters rearranged gives 'ADRENALIN'.

Can you help me to learn more?

(Other definitions for adrenalin that I've seen before include "Hormone affecting metabolism" , "Hormone that stimulates the nervous system" , "Hormone secreted in response to fear" , "Hormone secreted in response to stress" , "stimulant" .)

I've seen this clue in The Guardian.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.