N-Methyl-1,3-benzodioxolylpentanamine (MBDP; Methyl-K, UWA-091), also known as 3,4-methylenedioxy-α-propyl-N-methylphenethylamine, is a psychoactive drug of the phenethylamine chemical class which acts as an entactogen, psychedelic, and stimulant. It is the N-methyl analogue of 1,3-benzodioxolylpentanamine (BDP; K). Methyl-K was first synthesized by Alexander Shulgin ("Sasha" Shulgin). In his book PiHKAL ("Phenethylamines i Have Known And Loved"), the minimum dosage is listed as 100 mg, and the duration is unknown. Methyl-K produces few to no effects. Very little is known about the pharmacology, pharmacokinetics, effects, and toxicity of Methyl-K.
- Pentylone (bk-MBDP)
- Ethylbenzodioxolylpentanamine (EBDP; Ethyl-K)
- Methylbenzodioxolylbutanamine (MBDB; Methyl-J)