How can we buy research chemicals?

https://m5zbpsg798.doodlekit.com/blog/entry/7815888/fast-and-efficient-delivery-of-research-chemistry

One of the most interesting stimulants available is 3 MMC. It belongs to the beta ketones group and is also known as Metafedron. It is considered to be a derivative of cathinone, which has a stimulating effect