The family of stimulants has a new member called 4-EFMC crystal. It is one of the brand new legal powders which is not so widely known as its precursor 4-MMC. Their effects are quite similar but they also have some differences. Those who have tried 4-EFMC states that it is milder and lats longer than many legal powders claimed to have similar effects.
It’s similar to Flephedrone (4-FMC) and Mephedrone (4-MMC)
Other name: 4-Fluoroethylmethcathinone
IUPAC name: 2-amino-1-[4-(2-fluoroethyl)phenyl]propan-1-one
CAS number: 843221-23-2
Purity: 99,3% min
Appearance: white powder/white crystals