2C-T-28, also known as 4-(3-fluoropropylthio)-2,5-dimethoxyphenethylamine or as 2C-T-FP, is a psychedelic drug related to 2C-T-7 and 2C-T-21. It was named by Alexander Shulgin but was never made or tested by him, and was instead first synthesised by Daniel Trachsel some years later. It has a binding affinity of 75nM at 5-HT2A and 28nM at 5-HT2C. It is reportedly a potent psychedelic drug with an active dose in the 8–20mg range, and a duration of action of 8–10hours, with prominent visual effects. 2C-T-28 is the 3-fluoropropyl instead of 2-fluoroethyl chain-lengthened homologue of 2C-T-21 and has very similar properties, although unlike 2C-T-21 it will not form toxic fluoroacetate as a metabolite.[2][1] It is a controlled substance in Canada under phenethylamine blanket-ban language.[3]
123Trachsel D, Lehmann D, Enzensperger C (2013). Phenethylamine: Von der Struktur zur Funktion. Nachtschatten Verlag AG. pp.789–794. ISBN978-3-03788-700-4.