Chemical Database Online
2015-01-13azim58 - Chemical Database Online
ChemID
http://chem.sis.nlm.nih.gov/chemidplus/
This website also has a nice tool or applet for drawing chemical
structures: MarvinSketch
Marvin chemical drawing software can also be found here (a download link
on the ChemAxon website)
https://www.chemaxon.com/download.php?d=/data/download/marvin/5.11.5/marvin
beans-5.11.5-windows.exe