Research of formulas on the data base of the National Institute of Advanced Industrial Science and Technology of Tsukuba, Japon 

In the field 'formula' write the raw formula of the molecule (the letters in capitals). While pushing on 'research' you will get all semi-developed formulas with their names.

If you inform the 'name' (for exemple benzene) you will get the semi developed formula of the informed molecule as well as its physico-chemical characteristic etc...