There are multiple threads here on obtaining N. I'd suggest using the search tool and scanning the megathread "Getting N from A," especially the oldest and newest posts. Also read every Nembutal chapter in
the latest version of the PPeH; it's the closest thing there is to an objective outside expert on finding N. But remember that it's an extremely hard drug to get almost anywhere on Earth. You won't find it on a street corner and you won't find it (legitimately) on the darknet. You also won't find it (reliably) from anyone who offers it to you here. N is a scammer's delight and an easy way to lose $800, so make sure you do some serious research first.