Thank you for the many useful replies which resulted in finding sources for these two compounds.
methylmercury acetate at Pfaltz & Bauer Trimethyllead acetate at Chemos GmbH Still at a loose end for a commercial source for the Triethyllead acetate though. It used to be carried by Hampton Research but not presently in the current M1 kit. Thanks again for all the help. Yours, M. Gordon Joyce, Visiting Fellow, Structural Immunology Section, Laboratory of Immunogenetics, NIH/NIAID, 12441 Parklawn Drive, Rockville, MD 20851 Phone: 301 594 0242 Office 301 496 3792 Lab