source:
https://www.statnews.com/2017/06/19/synthetic-opioids-fentanyl-china/an excerpt:
By ASSOCIATED PRESS JUNE 19, 2017
BEIJING — China said Monday it would ban a designer drug called
U-47700Wiki and three others, following U.S. pressure to do more to control synthetic opioids blamed for fast-rising overdose deaths in the United States.
...
Deng Ming, deputy director of the National Narcotics Control Commission, said that U-47700 and three other synthetic drugs — (this opioid)
MT-45Wiki,
para-Methoxy-N-methylamphetamineWiki, and
4,4-DMARWiki — would be added to China’s list of controlled substances as of July 1