The molecule is an alkylglucosinolic acid that consists of 1-thio-beta-D-glucopyranose attached to an -N-(sulfooxy)propanimidoyl group at the anomeric sulfur. It occurs in Lepidium sativum (garden cress) and Armoracia lapathifolia (horseraddish). A flavour component; the hydrolysis product, ethyl isothiocyanate, is very pungent and garlic-like.
[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl] (1Z)-N-sulfooxypropanimidothioate