Calling the deadly drug pink a “Russian roulette scenario,” the federal Drug Enforcement Administration put the synthetic opioid on the highest list for dangerous drugs. On Monday, U-47700 will be listed as a Schedule 1 controlled substance, at least temporarily.

U-47700, also known as “pinkie,” is linked to the death of two Park City teenagers, eighth-grade students at Treasure Mountain Junior High School, in September. Available online, it’s responsible for 46¬†deaths in the U.S. over the past two years, including at least four in Utah.

Because the U-47700 production is unregulated, the DEA says, “the identity, purity and quantity are unknown, creating a ‘Russian Roulette’ scenario for any user.”

Park City School District will screen the anti-drug film Chasing the Dragon: The Life of an Opiate Addict on Dec. 6 at the Eccles Center.