Wikipedia
In organic chemistry, a propynyl functional group is a propyl bearing a triple bond. The 1-propynyl group has the structure CH-C≡C-R. The 2-propynyl group is also known as a propargyl group, and has the structure HC≡C−CH-R.
Category:Alkynyl groups
Propynyl, or 4- propynyl oxy-3,5-di methoxy phenethylamine, is a lesser-known psychedelic drug. It is closely related in structure to mescaline. Propynyl was first synthesized by Alexander Shulgin. In his book PiHKAL (Phenethylamines i Have Known And Loved), the minimum dosage is listed as 80 mg, and the duration listed as 8–12 hours. Propynyl produces a body load and few to no mental effects. Very little data exists about the pharmacological properties, metabolism, and toxicity of propynyl.