#1DL-Methionine Methylsulfonium Chlo...by gihichem601https://www.gihichem.com/products/dl-methionine-methylsulfonium-chloride-vitamin-u-cas-no-3493-12-7/ Vitamin U is a term introduced in the early 1950s to identify a comp...methylsulfoniumchloridemethionine+1 more