the injections of hexadeuterospermidine led to the appearance of labeled spermidine , isoputreanine , putreanine , n- ( 2-carboxyethyl ) -4-amino-n-butyric acid , putrescine , gamma-amino-n-butyric acid , 1,3-diaminopropane , beta-alanine and spermine .
C0002520
amino
C0000392
beta-alanine