2C-I (2,5-dimethoxy-4-iodophenethylamine is a psychedelic phenethylamine of the 2C family. It was first synthesized by Alexander Shulgin and described in his 1991 book PiHKAL: A Chemical Love Story. The drug is used recreationally for its psychedelic and entactogenic effects and is sometimes confused for the analog 25I-NBOMe, nicknamed "Smiles," in the media.