To furnish immediate evidence the peculiar improvement of catecholaminergic activity from the brain in animals dealt with with a small dose of (−)deprenyl is unrelated to MAO inhibition, we formulated inside the early '90s a family of deprenyl analogues devoid on the MAO-B inhibitory result (Knoll et al Determine 1 https://ppaphcl56654.blog-ezine.com/30347865/not-known-details-about-ppap-hcl