sentences:  When compared in nAChR-binding studies, MLA was found to compete for 125I-α-bungarotoxin binding sites (i.e.α7 sub-types) over 1000x more strongly than did lycoctonine.If the succinimide ring is deleted so as to leave only the -NH2 group attached to the benzene ring (as in the alkaloid [[anthranoyllycoctonine]], which also occurs naturally), the resulting compound is intermediate between MLA and lycoctonine in potency and toxicity