Sulfenic acid

Sulfenic acids are a class of chemical compounds containing organically bound sulfur and oxygen of the general structure R-S -OH, where R is an alkyl or aryl radical. A well-known representative of this class of compounds is the 1- Propensulfensäure, the tearful fabric of the onions. 1- Propensulfensäure is not in fresh onions, but is formed at the cutting by enzymatic degradation of ( ) -S -propenyl -L-cysteine ​​S-oxide. The enzyme and the precursor are in the intact onion in different cell compartments. Only after the destruction of some cells is the formation reaction for a 1- Propensulfensäure.