 Beta-alanopine (2,2'-iminodipropionic acid or L-alanine, "N"-(1-carboxyethyl)-) and "meso"-alanopine (meso-"N"-(1-carboxyethyl)-alanine) were isolated from marine invertebrates.Structurally it is a member of the octopine family.See "succinamopine"

Chrysopine (d-lactone of "N"-1-deoxy-D-fructosyl-L-glutamine) was first obtained from fig tree and chrysanthemum crown gall tumors.