Synonyms: 3,3-Diselenobisalanine;3,3-Diselenodialanine;Alanine, 3,3-diselenobis- (9CI);2-amino-3-(2-amino-2-carboxy-ethyl)selanylselanyl-propanoic acid;ALANINE, 3,3-DISELENODI-;Selenocystine;3,3′-DISELENODIALANINE;3,3′-DISELENODI-ALANINE;ALANINE, 3,3′-DISELENOBIS-(9CI);