Dicloqualone

The following information was compiled in June 2025 and is subject to change as new research is conducted and as new information becomes available:

Description: Dicloqualone is categorized as a quinazolinone and bears structural similarity to other “quaaludes” such as methaqualone. Dicloqualone was first identified in California in early 2022 and has subsequently been identified across the United States.1,2,3 Dicloqualone was identified by our laboratory in November 2024 and confirmed after acquiring standard reference material.

Sample Source: Chicago Recovery Alliance (Chicago, IL)

Sample Appearance: White powder

Pharmacology: Dicloqualone has sedative properties and increases the activity of GABA receptors similar to that of methaqualone.4,5

Toxicology: Dicloqualone has not been detected in toxicology cases to date at the CFSRE.

Drug Materials: Dicloqualone has been detected in one drug material to date at the CFSRE.

Demographics / Geographics: The drug material originated from Chicago, IL, and dicloqualone was found alongside opioids (e.g., fentanyl, heroin) and diphenhydramine.

Legal Status: Dicloqualone is not currently scheduled in the United States.



Class:
Miscellaneous
Appearance:
White powder
Formula:
C16H12Cl2N2O
MW:
319.2
[M+]:
318
[M+H]+:
319.0399
IUPAC:
5-chloro-3-(4-chloro-2-methyl-phenyl)-2-methyl-quinazolin-4-one
Report Date:
June 17, 2025
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