1h imidazole 1 carboxylic acid 2 3 dihydro 3 methyl 2 thioxo ethyl ester ethyl 3 methyl 2 thioimidazoline 1 carboxylate, athyromazole, carbethoxymethimazole
For the treatment of hyperthyroidism and thyrotoxicosis. It is also used to prepare patients for thyroidectomy.