Reach out to Constantylious777, he is a user of this platform and will be able to help you with the methylamine and hydrochloric acid, shipping from Poland.
About the bromoketone I am not sure but he might have it too.
He's selling in small scale but it's not legal as he is accepting BTC only and selling it through the deepweb, but for small scale he is also doing escrow so you remain very secure on your payment