***139755-83-2Sildenafil英文名Sildenafil别名5-[2-Ethoxy-5-(4-methylpiperazin-1-yl-sulphonyl)phenyl]-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazol[4,3d]pyrimidin-7-one产品名称***;1-[4-乙氧基-3-[5-(6,7-二氢-1-甲基-7-氧代-3-丙基-1H-吡唑并[4,3d]***)]苯磺酰]-4-甲基哌嗪分子式C22H30N6O4S分子量474.58CAS登录号139755-83-2)