Wikipedia
Pentylone
β-Keto-Methylbenzodioxolylpentanamine (Pentylone, βk-Methyl-K, βk-MBDP, methylenedioxypentedrone) is a stimulant compound developed in the 1960s, which has been reported as a novel designer drug and identified in some samples of powders sold as "NRG-1", along with varying blends of other substituted cathinone derivatives including flephedrone, MDPBP, MDPV and 4-MePPP. It was also found in combination with 4-MePPP being sold as "NRG-3".