3-fluoromethcathinone 3-fluoromethcathinone 3-fluoromethcathinone (also known as 3-fmc) is a chemical compound of the phenethylamine, amphetamine, and cathinone classes that has been sold online as a designer drug. it is a structural isomer of flephedrone (4-fluoromethcathinone). 3-fluoromethcathinoneclinical dataother names3-fmc, 3- fluoromethcathinoneroutes ofadministrationoral, intranasal, intravenouslegal statuslegal status de: anlage ii (authorized trade only, not prescriptible) uk: class b us: schedule i identifiers iupac name 1-(3-fluorophenyl)-2-(methylamino)propan-1-one cas number1049677-77-1 ypubchem cid53415330chemspider27523958 nunii78p68l3b0hchemical and physical dataformulac10h12fnomolar mass181.210 g·mol−13d model (jsmol)interactive image smiles fc1=cc=cc(=c1)c(c(c)nc)=o inchi inchi=1s/c10h12fno/c1-7(12-2)10(13)8-4-3-5-9(11)6-8/h3-7,12h,1-2h3 nkey:pqibrolluqsnqi-uhfffaoysa-n n ny (what is this?) (verify) 3-fluoroisomethcathinone is produced as a by-product when 3-fmc is synthesized, the activity of this compound is unknown. effects this chemical's effects and safety have not been studied scientifically. legal status in the united states, 3-fmc is schedule i controlled substance. in the united kingdom, 3-fmc is a controlled drug under the cathinone blanket ban. 3-fmc is an anlage ii controlled drug in germany. 3-fmc is banned in the czech republic.