Cony for: Fi le 461) R. A. SCHINTIFf"t- CMITROL 61'r"T., 1. 1y. HuGUIES 1-,.:H/VC/6'2- 14 th AugtiRt, 1964 Dear Ray, ACETYL COUMARONE reoff has rsssed to me your lite-ries on the toxicity of the nbove con-,ound. We hnvi~ nn rLIIljShCd information nvailable on the toxicity leveis. ~~or~-rrs --tich as Kitaf7awn and lwn~i hpve shown that it has physiological nction similar to coitrarin bjIt It TMICh lCitiVity. Other anpIngues of min-irone linve been found to exhibit sor,~ neqtrn!7enic activity simil-ir to that'observed in the tsoflavo!lo and cou-iRrin inrin!-.. As I underst.-ind it, t)lr i 'jq- oF cou-nirin lizas bron t-arred on the t-rotinds of it. heirc, carciiiopenLc, and rcrtainiv vit, finve nn iTifnry-tatimn Itere on the circinopenicit), of the benznfiirnn mplecule, which is the h-isic mciety of cournrnne. Unwever, I wntild suppest thnt sJTJCLN sicetyl cotu-inroiie Ymnv be physioloFicnily -Ictivev it VI-luld fie sensible to linve so;e check tests carried nut before its use c-in be agreed. I eyrrhasise that this is just a Personal view and probably Ceoff will add to this wken he returns. Consequently, I would he pratnful if you would t:tke this note as inerely nn intermediate riece of infornation for your own use. Yours sincerely, C.c. II.O.Anderson, Esq. j File 46D BATCo document for Province of British Columbia 12 November 1999