2F-Ketamine Crystal Chunks for sale 2F-Ketamine Crystal Chunks are a form of 2-Fluoro-Deschloroketamine (2F-Ketamine), a research chemical belonging to the dissociative anesthetic class. The IUPAC name for 2F-Ketamine is 2-(2-Fluorophenyl)-2-(methylamino)cyclohexanone, and its CAS number is 111982-49-1. These crystal chunks appear as large, solid pieces with a high level of purity, typically 98.0% or higher. This compound is highly sought after by researchers studying the effects of dissociatives on the brain and behavior due to its potent and unique properties.