<qa>  What is an isothiocyanate found in high levels in crucifers belongingSulforaphane SF is an isothiocyanate found in high levels in crucifers belonging to the family Brassicaceae including broccoli, cabbage, cauliflower, brussels sprouts, Chinese cabbage and turnips. Many previous studies have documented that consumption of these vegetables is associated with a reduced risk of cancer lung, breast, colon, rectum, and prostate.Juge et al. 2007 The mechanism of action of these beneficial effects is believed to be due to the ability of SF to up-regulate genes that improve cellular response to oxidative stress, inflammation, DNA-damaging electrophiles, and radiation.Singh et al. 2014 In a recent small, randomized controlled trial in children with autism, SF was shown to have beneficial effects on aberrant and social behavior.Singh et al. 2014 The mechanism of action of this beneficial effect has not been established in children with ASD. Our primary goal is to examine changes in urinary metabolites in children with autism who receive SF to determine if changes in behavior are associated with changes in urinary metabolites. 