(R)-(+)-Timolol Maleate

: (2R)-1-[(1,1-Dimethylethyl)amino]-3-[[4-(4-morpholinyl)-1,2,5-thiadiazol-3-yl]oxy]-2-propanol (2Z)-2-Butenedioate Salt; (R)-(+)-3-Morpholino-4-(3-tert-butylamino-2-hydroxypropoxy)-1,2,5-thiadiazole Hydrogen Maleate; Timolol USP Related Compound A