How would you draw the chemical formula C5H5N5?

Question

and the formula C5H11O2NS? I need to know how to draw it using single, double, and triple bonding. I'm not too good at Chemistry. Thanks.

(By the way, all of the numbers are supposed to be sub-scripted).

Answer 1

C5H5N5 ( Adenine )

http://www.chem.purdue.edu/gchelp/molecu...

http://www-scf.usc.edu/~chem203/resource...

C5H11O2NS ( Methionine )

http://www.ibpc.fr/~poulain/aminoacid/me...

P.S. carboxyl group (-COOH ) has the formula -C(=O)OH