CBL (cannabicyclol) is a relatively unknown, non-intoxicating minor cannabinoid formed when the better studied CBC (cannabichromene) degrades due to exposure to natural elements like light, air, and time. Very little research exists specifically looking at CBL because broader cannabis research remains in its infancy and has focused on major compounds THC and CBD.
Based on its molecular structure, CBL is believed to be non-psychoactive, as the double bonds required for intoxicating effects are absent. This contrasts CBC, which is intoxicating. The scarce data on CBL exemplifies the overall lack of research into minor cannabinoids and their potential therapeutic benefits beyond the most abundant CBD and THC.
Aside from production through CBC degradation, little is concretely known about the pharmacology, effects, or medical benefits of CBL specifically. The minor cannabinoid serves as an example of the vast chemical diversity in cannabis remaining to be explored now that restrictions on research are easing. The functions of scores of known compounds, and potentially others yet undiscovered, await future scientific inquiry.