The 2C-T-x series contains a very broad spectrum of compounds from barely active to fully psychedelic phenethylamines. It is theorized that all of the members are MAOIs, as it is seen within the ALEPH series. Many have not been synthesized yet.
Among the members, the most popular ones are 2C-T-2 and 2C-T-7, which are part of the so-called "magical half-dozen" which refers to Shulgin's self-rated most important phenethylamine compounds, all of which -- with the exception of mescaline -- he designed, synthesized and tested on himself. They can be found within the first book of PiHKAL, and are as follows: Mescaline, DOM, 2C-B, 2C-E, 2C-T-2 and 2C-T-7.
List of 2C-T-x compunds
Health effects, potential addiction and tolerance
The 2C-x chemicals, as with many other serotonergic psychedelics, should not be taken in combination with SSRIs (selective serotonin reuptake Inhibitor) or tricyclic antidepressants in general to avoid Serotonin Syndrome, a potentially life-threatening condition in which an abundance of serotonin is built up the body, causing many physical and cognitive health problems.