To furnish direct proof which the peculiar enhancement of catecholaminergic action within the brain in animals treated with a small dose of (−)deprenyl is unrelated to MAO inhibition, we made inside the early '90s a family of deprenyl analogues devoid on the MAO-B inhibitory outcome (Knoll et al PPAP 23 https://ppap-hcl47765.amoblog.com/the-single-best-strategy-to-use-for-ppap-hcl-52145493