Butylone includes a methyl substitution at RN, a substitution which is shared with MDEA, ethylone, four-MEC, and selected other stimulants and entactogens. Moreover, butylone has substitutions at R3 and R4 in the phenyl ring with oxygen groups. These oxygen groups are included into a methylenedioxy ring by way of a https://citychemiststore.com/product/buy-fentanyl-pills-online/