GBL is gamma butyrolactone, furanone dihydro, and a bunch of other analogous terms. usually comes in HDPE plastic containers and the brand name/description could be anything - without a listing of ingredients.
clear liquid, slightly more viscous than water, when added to water does not mix well - looks abit like gasoline when added to water in reverse(GBL is denser than H2O).
the smell is unmistakable - if plastic had a dirty ass, this is what it would smell like. taste - same, and moreover, you will be smelling it on your breath, and in your sweat (i think the solvent properties are understated, this stuff is like DMSO).
make sure you are careful in dosing - at 1.5 ml i felt just a tiny buzz, while at 3.0 ml i was blowing chunks and literally felt like someone grabbed me by the arm and forcibly pulled me from being wide awake into comatose sleep, had to fight to stay awake.
[This message has been edited by interferon (edited 23 July 2001).]