4C-T-24C-T-2, also known as 2,5-dimethoxy-4-ethylthio-α-ethylphenethylamine, is a synthetic drug of the phenethylamine, phenylisobutylamine, and 4C families. It is the α-ethylated analogue of 2C-T-2.PharmacologyPharmacodynamics4C-T-2 acts as a serotonin 5-HT2 receptor agonist, including of the serotonin 5-HT2A, 5-HT2B, and 5-HT2C receptors.History4C-T-2 was first described in the scientific literature by at least 2005. It was more fully characterized in 2010 and then in 2023.