THCB and CBDB have been identified in the italian medical cannabis strain FM2 (Citti et al., 2019; Linciano et al., 2019).

References

Citti, C., Linciano, P., Forni, F., Vandelli, M. A., Gigli, G., Laganà, A., & Cannazza, G. (2019). Analysis of impurities of cannabidiol from hemp. Isolation, characterization and synthesis of cannabidibutol, the novel cannabidiol butyl analog. Journal of Pharmaceutical and Biomedical Analysis, 175, 112752. https://doi.org/10.1016/j.jpba.2019.06.049

Linciano, P., Citti, C., Luongo, L., Belardo, C., Maione, S., Vandelli, M. A., Forni, F., Gigli, G., Laganà, A., Montone, C. M., & Cannazza, G. (2019). Isolation of a High-Affinity Cannabinoid for the Human CB1 Receptor from a Medicinal Cannabis sativa Variety: Δ9-Tetrahydrocannabutol, the Butyl Homologue of Δ9-Tetrahydrocannabinol. Journal of Natural Products. https://doi.org/10.1021/acs.jnatprod.9b00876