Natural product to modern discovery of their active ingredients and eventually to the development of new drugs. A large number of currently prescribed drugs have been either directly derived from or inspired by natural products. A few representative examples are listed below. Some of the oldest natural product based drugs are analgesics. The bark of the willow tree has been known from antiquity to have pain relieving properties. This is due to presence of the natural product salicin which in turn may be hydrolyzed into salicylic acid. A synthetic derivative acetylsalicylic acid better known as aspirin is a widely used pain reliever.
ASA Late Model Series was renamed the ASA Late Model Challenge Series. As part of the splinter of the American Speed Association caused by the 2004 season, the American Speed Association was broken up. The Late Model Series was reacquired by Varney, while other assets were sold to Racing Speed Associates, led by Dennis Huth. On December, 2007, Dennis Huth filed a lawsuit against the ASA Late Model Series seeking to invalidate and cancel the ASA Late Model Series trademark registration. The ASA Late Model Series responded that the lawsuit is frivolous and without merit and plan counter sue Mr. Huth for damages caused