小中大回复 #4 small2011 的帖子
FDA查询1999年的说明书描述如下:cuturl('http://www.accessdata.fda.gov/drugsatfda_docs/label/1999/20796LBL.PDF')
DESCRIPTION: COMTAN® is available as tablets containing 200-mg entacapone.
Entacapone is an inhibitor of catechol-O-methyltransferase (COMT), used in the treatment of
Parkinson’s disease as an adjunct to levodopa/carbidopa therapy. It is a nitrocatechol-structured
compound with a relative molecular mass of 305.29. The chemical name of entacapone is (E)-2-cyano-
3-(3,4-dihydroxy-5-nitrophenyl)-N,N-diethyl-2-propenamide. Its empirical formula is C14H15N3O5 and its
structural formula is:
The inactive ingredients of the COMTAN tablet are microcrystalline cellulose, mannitol, croscarmellose
sodium, hydrogenated vegetable oil, hydroxypropyl methylcellulose, polysorbate 80, glycerol 85%,
sucrose, magnesium stearate, yellow iron oxide, red oxide, and titanium dioxide
辅料包含:MCC、甘露醇、CCNa、氢化植物油、HPMC、吐温80等,已经公开的内容,不必担心专利了。
前期工作还要加强啊。