4-D is a musical group.
4-D, or 3,5-methoxy-4-trideutero methoxy phenethylamine, is a lesser-known psychedelic drug. It is one of the only phenethylamines that contain deuterium, the other being beta-D. It is also the 4-trideuteromethoxy analogue of 2C-H. It may be prepared either as a sulfate salt or a hydrochloride salt. 4-D was first synthesized by Alexander Shulgin. In his book PiHKAL, the dosage is listed as approximately 200–400 mg for the sulfate salt, and 178–356 mg for the hydrochloride salt. 4-D lasts for approximately 12 hours. It causes closed-eye visuals, mild open-eye visuals, color distortion, and mydriasis. Very little data exists about the pharmacological properties, metabolism, and toxicity of 4-D.
- also known as ۴-دی