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The 4-(methylthio)butyl isothiocyanate, erucin (ER), is a reduced analog of the 4-(methylsulfinyl)butyl isothiocyanate, sulforaphane (SF), and its formed both from enzymatic hydrolysis of glucoerucin, a glucosinolate found at high levels in rocket species (Eruca sativa Mill., Diplotaxis tenuifolia L.) and in vivo reduction of SF, derived from broccoli (Brassica oleracea L. ssp italica).
