FLY is a family of phenethylamine and benzofuran psychedelics possessing a benzodifuran or similar ring system. The FLY drugs were so-named because of the resemblance of their chemical structures to flying insects like dragonflies and butterflies. They are analogues of 2,5-dimethoxyphenethylamines in which the 2- and 5-position methoxy groups have been cyclized into furan and/or tetrahydrofuran rings. They may be 2C, DOx, 25-NB, or other FLY versions of psychedelic phenethylamines.

From Wikipedia (CC BY-SA 4.0).

Notable quotes

“I am perfectly willing to share the room with a fly, as long as he is patrolling that portion of the room I don't occupy. But if he starts that smart-ass fly shit, buzzing my head and repeatedly landing on my arm, he is engaging in high-risk behavior.”
— George Carlin, Brain Droppings (1997).
“King James said to the fly, "Have I three kingdoms, and thou must needs fly into my eye?"”
— John Selden, Table-Talk (1689), ed. Edward Arber (London: Alex. Murray & Son, 1868), p. 102.
“We see spiders, flies, or ants entombed and preserved forever in amber, a more than royal tomb.”
— Francis Bacon, Historia Vitæ et Mortis.
“We see how flies, and spiders, and the like, get a sepulchre in amber, more durable than the monument and embalming of the body of any king.”
— Francis Bacon, Sylvia Sylvarum, Century I, Experiment 100.
“The fly that sips treacle is lost in the sweets.”
— John Gay, The Beggar's Opera, Act II, scene 2, line 35.
“The Lord shall hiss for the fly that is in the uttermost part of the rivers of Egypt.”
— Isaiah, VII. 18.

Quotes via Wikiquote (CC BY-SA), each with its original source.

FLY is a family of phenethylamine and benzofuran psychedelics possessing a benzodifuran or similar ring system. The FLY drugs were so-named because of the resemblance of their chemical structures to flying insects like dragonflies and butterflies. They are analogues of 2,5-dimethoxyphenethylamines in which the 2- and 5-position methoxy groups have been cyclized into furan and/or tetrahydrofuran rings. They may be 2C, DOx, 25-NB, or other FLY versions of psychedelic phenethylamines.

Not who you're looking for? Others named FLY: common name of small flying insects, especially Diptera · EP by Sick Puppies. · 2024 documentary film directed by Shaul Schwarz and Christin · Blind Guardian song