demethylpiperazinyl,desoxo,thioxosildenafil,sulfonic,piperazinyl
Piperazinyl
63422-71-9(D-)-alpha-[[(4-Ethyl-2,3-dioxo-1-piperazinyl) carbonyl]amino]-2-(4-hydroxyphenyl) acetic acid
868768-33-6Acetamide,N-[4-[6-amino-5-cyano-2-[[[6-[3-oxo-3-[4-(4-pyridinylmethyl)-1-piperazinyl]propyl]-2-pyridinyl]methyl]thio]-4-pyrimidinyl]phenyl]-