To furnish immediate evidence the peculiar improvement of catecholaminergic activity from the brain in animals dealt with with a little dose of (−)deprenyl is unrelated to MAO inhibition, we designed in the early '90s a relatives of deprenyl analogues devoid in the MAO-B inhibitory result (Knoll et al copyright - https://ppaphcl09764.fireblogz.com/61533184/detailed-notes-on-ppap-hcl