药物信息为BLOCADREN (TIMOLOL MALEATE) TABLETS (Merck & Co., Inc.): DESCRIPTION

BLOCADRENRegistered trademark of MERCK & CO., Inc.COPYRIGHT © MERCK & CO., Inc., 1985All rights reserved (Timolol Maleate) is a non-selective beta-adrenergic receptor blocking agent. The chemical name for timolol maleate is (S )-1-[(1,1-dimethylethyl) amino]-3-[[4-(4-morpholinyl)-1,2,5-thiadiazol-3-yl]oxy]-2-propanol (Z)-2-butenedioate (1:1) salt. It possesses an asymmetric carbon atom in its structure and is provided as the levo isomer. Its empirical formula is C₁₃H₂₄N₄O₃S•C₄H₄O₄ and its structural formula is:

Timolol maleate has a molecular weight of 432.50. It is a white, odorless, crystalline powder which is soluble in water, methanol, and alcohol.

BLOCADREN is supplied as tablets in three strengths containing 5 mg, 10 mg or 20 mg timolol maleate for oral administration. Inactive ingredients are cellulose, FD&C Blue 2, magnesium stearate, and starch.