The predominant seed glucosinolate; representing 41% of the total; has an aliphatic; butylbased side chain with a sulfur atom; but is not 4MSOB; the main glucosinolate found in the vegetative parts of the plant; but rather its reduced counterpart; 4-methylthiobutyl glucosinolate (4MTB). The seeds also contain greater amounts of the longer-chain aliphatic glucosinolates; such as 7-methylsulfinylheptyl- and 8-methylsulfinyloctyl- glucosinolate; than are found in the vegetative tissues (Brown et al. 2003)