P-Hydroxybenzyl isothiocyanate

Sinalbin undergoes hydrolysis by myrosin to give sinapin (as the bisulfate), p-hydroxybenzyl isothiocyanate and n-glucose. Sinapin, in turn, hydrolyzes readily to choline and sinapinic acid. The structure of the latter was ascertained" by oxidation to known reference substances. 

Main components 1.5-2.5% sinalbin, a glucosinolate, which, after the addition of water, is degraded enzymatically by myrosinase into p-hydroxybenzyl isothiocyanate (not water-vapour volatile), glucose and sinapin hydrogensulphate. Sinapin constitutes the choline ester of sinapinic acid. Moreover, the plant contains app. 30% vegetable oil, mainly the glycerides of erucic acid, mucilage, steroids and proteins. 

Sinalbin p-hydroxybenzyl isothiocyanate Tyrosine Brassica alba... 

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