WHAT DOES 4F-MDMB K2 INFUSED PAPER MEAN?

(B) at least a few of the following classes of substances commonly used in the manufacture of methamphetamine:(five) any compound made up of a core component substituted on the 1-situation to any extent, and substituted at the 3-place using a backlink part attached to a bunch A component, whether or not the core component or group A element are fur