1-(Tert-butylamino)-3-{[4-(morpholin-4-yl)-1,2,5-thiadiazol-3-yl]oxy}propan-2-ol
Timolol is 1,2,5-Thiadiazole substituted at the 3 position by a 3-(tert-butylamino)-2-hydroxypropoxy group and at the 4 position by a morpholin-4-yl group. The (S)-(-) enantiomer, also known as timolol, is a beta-adrenergic antagonist and is used in the mangement of glaucoma, hypertension, angina pectoris and myocardial infarction, and for the prevention of migraine. It is a member of thiadiazoles and a member of morpholines. It derives from a hydride of a 1,2,5-thiadiazole.