A synthetic opioid known as “pink” is legal in most states, even though it is almost eight times stronger than morphine, CNN reports.

The drug, also known as U-47700, is responsible for dozens of deaths nationwide, the article notes. Adam Kline, Police Chief of White Lake, Michigan, told CNN the drug can be legally purchased on the “dark web” in the form of a powder, pill or nasal spray.

Last month, the Drug Enforcement Administration told NBC News it is aware of confirmed deaths associated with the drug in New Hampshire, North Carolina, Ohio, Texas and Wisconsin. The drug, along with other synthetic opioids, is being shipped into the United States from China and other countries.