[tukus84]

can you suggest me a website where i can get detail R,S nomencleature(explaning all the rule of CIP)

I need help for specialy two type compound
              1) chiral center of cyclic molecule
              2)chiral center involving E/Z substituent(z get piority over E)

[azmanam]

Start Here:

http://www.cem.msu.edu/~reusch/VirtTxtJml/sterisom.htm#start
http://www.cem.msu.edu/~reusch/VirtTxtJml/sterism2.htm#isom9
http://www.cem.msu.edu/~reusch/VirtTxtJml/sterism3.htm#isom13