TOXNET was a robust toxicology resources service provided by the U.S. National Institute of Health's National Library of Medicine. As part of a broader NLM reorganization, most of NLM's toxicology information services were integrated into other NLM products and services. A list of the most relevant resources previously available through TOXNET are provided here.
Imace (c) CC BY Nicole Gustavsen,
You can use Boolean logic as part of your search strategy to easily scope your searching to bring back more relevant results. The AND operator is used to narrow results, while the OR operator is used to expand them. You can also use the NOT operator to exclude particular search terms from a pool of results. Other tools include quote search (search for a phrase "in quotes" to find that exact phrase), and wildcard (search for all possible endings of a word at once using the asterisk: wild* brings back wilds, wildcard, wilderness, wildland, etc).