英文别名Desmethyl Fondenafil; Desmethyl carbodenafil; Carbodenafil Impurity 2; 5-(2-Ethoxy-5-(4-methylpiperazine-1-carbonyl)phenyl)-1-methyl-3-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one; 7H-Pyrazolo[4,3-d]pyrimidin-7-one, 5-[2-ethoxy-5-[(4-methyl-1-piperazinyl)carbonyl]phenyl]-1,6-dihydro-1-methyl-3-propyl-; Piperazine,1-[3-(4,7-dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-5-yl)-4-ethoxybenzoyl]-4-methyl-; Carbodenafil-desmethyl 
