Well, there is natural products chemistry, which is anything that is produced directly from biology. It is a useful thing to keep track of as if something compl

Well, there is natural products chemistry, which is anything that is produced directly from biology. It is a useful thing to keep track of as if something complex is being produced by a biological process you can hook into it for precursors to make other complex molecules more easily. You can also completely synthesize a natural product and it doesn't stop the status of the chemical. All the name means is that it is known to be existent as the output of a biological process.