[trhway]

i'm a layman here, so just googled it:

https://pubchem.ncbi.nlm.nih.gov/compound/Pyrovalerone

"Pyrovalerone is a DEA Schedule V controlled substance. Substances in the DEA Schedule V have a low potential for abuse relative to substances listed in Schedule IV and consist primarily of preparations containing limited quantities of certain narcotics."

[dev_hugepages]

He's talking about the derivatives (nicknamed Pyros because they're related to Pyrovalerone) like α-PVP, MDPV and others.

[temp0826]

More commonly "bath salts"