I find it in a table in the book Marijuana - Chemistry, Pharmacology, Metabolism and Clinical Effects, Edited by Raphael Mechoulam, Academic Press, Publ. 1973, Library of Congress Catalog #72-77349
Chapter 2 - Structure Activity Relationships, Table V - Activity of delta-1 and delta-6-THC Derivatives and Related Materials. This table gives the dosage necessary to produce certain observable effects in rhesus monkeys: - indicates no change; +-, tranquility; +, drowsiness,decreased motor activity,occasional partial ptosis,occasional head drop; ++, stupor, ataxia, full ptosis, suppresion of motor activity, typical crouched position ("thinker position") for up to three hours, presence of reaction to external sensorial stimuli; +++, severe stupor and ataxia, full ptosis, immobility, "thinker position" lasting for more than 3 hours and absence of reaction to external stimuli.
From the table:
Compound Dose (mg/kg) Activity
(-)-delta1-THC 0.05 +
0.1 ++
0.25 ++
0.5 +++
delta1-THC acetate 0.2 +-
0.5 +
1.0 ++
(-)-delta6-THC 0.1 +-
0.25 +
0.5-0.9 ++
1.0-2.0 +++
delta6-THC acetate 0.2 -
0.5 +
1.0 ++
5.0 +++