The Pistoia Alliance Chemical Safety Library (CSL) provides unique crowd sourced data content containing hazardous reactions that can be used to alert scientists to potential dangerous experiments. CAS, a division of the American Chemical Society, is committed to increasing safety in the lab and has provided this open access platform to serve scientists worldwide.

Controlled Substances Squared is a software system, updated weekly, which can quickly screen even the largest chemical collections of millions of chemicals for regulated chemicals against controlled substance lists from around the world.