News Chemistry Better sleuthing through chemistry New tool can tell where, when or how a chemical warfare agent originated By Rachel Ehrenberg March 23, 2010 at 4:46 pm - More than 2 years ago Share this:Share Share via email (Opens in new window) Email Click to share on Facebook (Opens in new window) Facebook Click to share on Reddit (Opens in new window) Reddit Click to share on X (Opens in new window) X Click to print (Opens in new window) Print SAN FRANCISCO — Finding out whodunit in chemical warfare cases may be aided by scientists focused on the howdunit. Researchers have developed a technique to ascertain the chemical fingerprint of compounds such as mustard gas, rat poison and nerve agents such as VX.