5'-[[(3S)-3-Amino-3-carboxypropyl]methylsulfonio]-5'-deoxyadenosine Disulfate; 5'-[(L-3-Amino-3-carboxypropyl)methylsulfonio]-5'-deoxyadenosine Disulfate; S-Adenosylmethionine Disulfate; Active Methionine Disulfate; Ademetionine Disulfate; L-S-Adenosylmethionin Disulfate; S-Adenosyl-L-methionine Disulfate

Methyl donor; cofactor for enzyme-catalyzed methylations, including catechol O-methyltransferase (COMT) and DNA methyltransferases (DNMT). Although present in all cells, it is concentrated in liver where 85% of all methylation reactions occur. It is also involved in regulating liver function, growth, and response to injury.