LETTER TO NATIONAL INSTITUTE OF MENTAL HEALTH RE 1-(BETA-DIETHYLAMINOETHYL)-2-(P-ETHOXYBENZYL)-5-NITROBENZIMIDAZOLE METHANE SULFONATE (FA-20684, NIH-7607, ARC I-G-2) WITHOUT ENCLOSURES

DEPARTMENT OF HEALTH, EDUCATION, AND WELFARE PUBLIC HEALTH SERVICE 9 June 1959 National Institute of Mental Health Addiction Research Center U.S. Public Health Service Hospital Lexington, Keatucty Under separate cover we are forwarding you 2 gm of 1-(beta- diethylaminoethy1)=2-(p-ethoxybenzyl)-5-nitrobenzimidazole methane sulfonate (Ba-20684, NIH-7607, ARC I-G-2). This is an extremeiy potent material and care should be used in handling it; souice was, of course, the Ciba company...