DOEF, or 4-fluoroethyl-2,5-methoxyamphetamine, is a lesser-known psychedelic drug and of the DOx class. DOEF was first synthesized by Alexander Shulgin. In his book PiHKAL (Phenethylamines i Have Known And Loved), the dosage range is listed as 2-3.5[mg], and the duration is listed as 12–16 hours. DOEF produces increased appreciation of music, closed-eye visuals, increased sexual pleasure, and intense slowing of time. Very little data exists about the pharmacological properties, metabolism, and toxicity of DOEF.

CAS：121649-01-2
中文别名：
英文别名：2,5-Dimethoxy-4-(2-fluoroethyl)amphetamine;4-(2-Fluoroethyl)-2,5-dimethoxyamphetamine;
分子式：C13H20FNO2
分子量：241.302
精确质量：241.148
Psa：44.48
Logp：2.8058