9-O-D-Glucopyranosyl Alternariol is a derivative of Alternariol (A575760) which is an alternaria mycotoxin and genotoxin, found in common edible crops. 9-O-D-Glucopyranosyl Alternariol was found as a conjugated metabolite of Alternariol present in tobacco suspension cells demonstrating that mycotoxins of Alternariol, which are considered to be masked, can be formed in plant cells.