In demand (7)
'in demand' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for desired that I've seen before include "Sought after" , "Lusted-after" , "much wished for" , "Craved" , "requested" .)
(Other definitions for popular that I've seen before include "The people's" , "having many fans" , "Liked or admired by many" , "Democratic - of general appeal" , "Demotic" .)