A recently published case report linked an apparent opioid overdose to DNM-sourced ocfentanil:
The fulltext links to this /r/DarkNetMarkets thread reporting a similar product (via /r/DNMAvengers repost):
Abstract: This paper describes the first reported death involving ocfentanil, a potent synthetic opioid and structure analogue of fentanyl abused as a new psychoactive substance in the recreational drug scene. A 17-year old man with a history of illegal substance abuse was found dead in his home after snorting a brown powder purchased over the internet with bitcoins. Acetaminophen, caffeine and ocfentanil were identified in the powder by gas chromatography mass spectrometry and reversed-phase liquid chromatography with diode array detector.
Full text: http://sci-hub.cc/10.1016/j.forsciint.2016.07.005
This is guaranteed to be pointneufs gear. His "heroin" is brown and tested for all of the above. He's still allowed on Valhalla, I even made a complaint to the admins about him and they said they keep an eye on it. This was months ago. Sad.