(-)--Δ-Tetrahydrocannabiphorol Content of Inflorescence from Various Chemotypes.

The (-)--Δ-tetrahydrocannabiphorol (Δ-THCP, ) content of the inflorescence from six chemotypes, including 14 plants of distinct genotypes, and two extracts was determined quantitatively via high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS). This represents the first comprehensive quantitative screening for from various chemotypes. Compound was detected in all 13 inflorescence samples originating from "(-)--Δ-tetrahydrocannabinol (Δ-THC, ) dominant" chemotypes, but was not detected in a "cannabidiol (CBD, ) dominant" chemotype. The inflorescence content of ranged approximately from 0.0023% to 0.0136% (w/w). Comprehensive inflorescence sampling was performed for each specimen investigated. A trend between inflorescence cannabinoid potency and the location of which the inflorescence was sampled on the plant was observed for the three cannabinoids tested (-). The preliminary results obtained indicate Δ-THCP () may have a higher degree of prevalence in inflorescence than previously estimated.