Element in formulaic compounds (11)

I believe the answer is:

californium

'element' is the definition.
(californium is a kind of element)

'in formulaic compounds' is the wordplay.
'compounds' indicates an anagram.
'in'+'formulaic'='informulaic'
'informulaic' is an anagram of 'CALIFORNIUM'.

(Another definition for californium that I've seen is " Unstable element".)

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

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