what is thj
Summary sheet: THJ-2201. THJ-2201 (1-â[(5-âfluoropentyl)-â1H-âindazol-â3-âyl](naphthalen-â1-âyl)methanone) is a synthetic cannabinoid and analog of AM-2201. It has been marketed by many research chemical vendors as a legal alternative to the popular AM-2201, which had been banned in 2011.