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S-Methyl 2-propene-1-sulfinothioate is found in onion-family vegetables. S-Methyl 2-propene-1-sulfinothioate is a constituent of Allium species.

S-2-Propenyl methanesulfinothioate is found in onion-family vegetables. S-2-Propenyl methanesulfinothioate is a constituent of Allium species.

(Z)-S-Methyl 1-propenesulfinothioate is found in onion-family vegetables. (Z)-S-Methyl 1-propenesulfinothioate is a constituent of Allium species.

(Z)-S-1-Propenyl methanesulfinothioate is found in onion-family vegetables. (Z)-S-1-Propenyl methanesulfinothioate is a constituent of onion (Allium cepa), garlic (Allium sativum) and other Allium species.

Methyl-1-propenyl thiosulfinate is a member of the class of compounds known as thiosulfinic acid esters. Thiosulfinic acid esters are organic compounds containing an ester of thiosulfinic acid with the general structure RS(=S)OR' (R, R'=alkyl, aryl). Methyl-1-propenyl thiosulfinate is soluble (in water) and an extremely weak basic (essentially neutral) compound (based on its pKa). Methyl-1-propenyl thiosulfinate can be found in soft-necked garlic, which makes methyl-1-propenyl thiosulfinate a potential biomarker for the consumption of this food product.

Trans-1-propenyl methyl thiosulfinate is a member of the class of compounds known as thiosulfinic acid esters. Thiosulfinic acid esters are organic compounds containing an ester of thiosulfinic acid with the general structure RS(=S)OR' (R, R'=alkyl, aryl). Trans-1-propenyl methyl thiosulfinate is soluble (in water) and an extremely weak basic (essentially neutral) compound (based on its pKa). Trans-1-propenyl methyl thiosulfinate can be found in soft-necked garlic, which makes trans-1-propenyl methyl thiosulfinate a potential biomarker for the consumption of this food product.