To furnish immediate proof that the peculiar enhancement of catecholaminergic action within the Mind in animals handled with a small dose of (−)deprenyl is unrelated to MAO inhibition, we developed inside the early '90s a relatives of deprenyl analogues devoid of the MAO-B inhibitory result (Knoll et al Determine 1 https://ppaphcl09764.fireblogz.com/61533184/detailed-notes-on-ppap-hcl