820614
From Denver, Colorado on August 19, 2026
Assumed to be fentanyl
This is a messy brew of 5 major substances:
- methamphetamine
- N-phenylpropanamide
- 4-ANPP
- fentanyl
- phenethyl 4-ANPP
Fentanyl is potent and the amount changes by batch. If you weren't expecting it, consider getting test strips online or from a harm reduction program. Carry naloxone (Narcan) to reverse overdoses. Don't use alone so someone can help if you go out.
There are a lot of different substances in this sample. We don't know the harms that some of these can cause. Be careful and be prepared for unexpected reactions.
Looks = white, powder
Need free supplies and advice to keep you safe? Find your nearest harm reduction program at harmreduction.org
Major substances in graph:
Peak: 4.21 = methamphetamine
Peak: 5.33 = N-phenylpropanamide
Peak: 9.13 = 4-ANPP
Peak: 10.28 = fentanyl
Peak: 12.27 = phenethyl 4-ANPP
Method(s): GCMS
Record for Sample 820614 last updated September 2, 2026