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α-Pyrrolidinopentiophenone (α-PVP), also known as α-pyrrolidinovalerophenone, O-2387, β-keto-prolintane, prolintanone, [2] [3] or desmethylpyrovalerone, is a synthetic stimulant of the cathinone class developed in the 1960s that has been sold as a designer drug and often consumed for recreational reasons.
An Attic weight talent was about 25.8 kilograms (57 lb). Friedrich Hultsch estimated a weight of 26.2 kg, [25] and Dewald (1998) offers an estimate of 26.0 kg. [26] An Attic talent of silver was the value of nine man-years of skilled work, according to known wage rates from 377 BC. [27]