Imagine that in the course of an investigation, law enforcement officers suspect the presence of a clandestine laboratory processing illicit drugs. Upon the execution of a search warrant, these officers discover a clandestine laboratory hidden in the basement, full of bottles and containers with chemicals. For personal and public safety, as well as potential criminal prosecution, the officers must be able to identify both the illicit substances and all substances used to make them. For officers who likely are not chemists, how can they do this quickly and safely? What if they could enter the list of chemicals in a search engine or a special database and discover that these chemicals are the reagents or ingredients for the production of a toxic gas?