What is the estimated number of known chemical compounds?

Question

including all known proteins ;)

Answer 1

approximately 30 million

In this link, the third paragraph from the title "Naming & Indexing"

http://www.chemicalnews.ca/

Answer 2

I'd say 100 million and growing rapidly

Answer 3

Carbon alone can make up too 200 thousand because it allways wants to lose or gain electron.  

Answer 4

infinity