英文别名Benzylsildenafil; Benzyl Sildenafil; Sildenafil-N-benzyl; 5-(2-Ethoxy-5-((4-(phenylmethyl)-1-piperazinyl)sulfonyl)phenyl)-1,6-dihydro-1-methyl-3-propyl-7H-pyrazolo(4,3-d)pyrimidin-7-one; 5-(5-((4-Benzylpiperazin-1-yl)sulfonyl)-2-ethoxyphenyl)-1-methyl-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-7(6H)-one; 5-[5-(4-benzylpiperazin-1-yl)sulfonyl-2-ethoxyphenyl]-1-methyl-3-propyl-6H-pyrazolo[4,3-d]pyrimidin-7-one; 5-{5-[(4-benzylpiperazin-1-yl)sulfonyl]-2-ethoxyphenyl}-1-methyl-3-propyl-1H,6H,7H-pyrazolo[4,3-d]pyrimidin-7-one; 5-[2-Ethoxy-5-[[4-(phenylmethyl)-1-piperazinyl]sulfonyl]phenyl]-1,6-dihydro-1-methyl-3-propyl-7H-pyrazolo[4,3-d]pyrimidin-7-one; 5-(5-((4-benzylpiperazin-1-yl)sulfonyl)-2-ethoxyphenyl)-1-methyl-3-propyl-1,4-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one 
