SAMe-1,4-Butanedisulfonate -d 3 is the deuterium labeled SAMe-1,4-Butanedisulfonate. SAMe-1,4-Butanedisulfonate , a natural compound, is a methyl donor in the central nervous system. SAMe-1,4-Butanedisulfonate has antidepressant activity. SAMe-1,4-Butanedisulfonate can be used for research of CNS disorders