Some frothy molecular substance used as antiseptic (6)

I believe the answer is:

thymol

'antiseptic' is the definition.
(I've seen this before)

'some frothy molecular substance' is the wordplay.
'some' indicates a hidden word (some of the parts of the word are used).
'THYMOL' is hidden in the letters of 'frothy molecular substance'.

'used as' acts as a link.

(Another definition for thymol that I've seen is " chemical antiseptic".)

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.