Gentisohydroxamic acid

Formula : C7-H7-N-O4
CAS : 27286-93-7 

Inhibits urease-induced crystalluria.

Gentisone HC

Formula :
CAS : 123902-40-9 

Antibiotic-corticosteroid preparation; produces thickening of both the tympanic membrane & the meatal epidermis; has antimitotic effect.