hydantoin-5-propanoate + methanethiol => S-methyl-thiohydantoin-5-propanoate + H2O
hydantoin-5-propanoate + methanethiol => s-methyl-thiohydantoin-5-propanoate + h2o
hydantoin-5-propanoate + methanethiol => S-methyl-thiohydantoin-5-propanoate + H2O
hydantoin-5-propanoate + methanethiol => s-methyl-thiohydantoin-5-propanoate + h2o