Abstract: Methods for making trans-(?)-?9-tetrahydrocannabinol and trans-(+)-?9-tetrahydrocannabinol are disclosed herein. In one embodiment, a trans-(?)-?9-tetrahydrocannabinol composition is prepared by allowing a composition comprising (±)-?9-tetrahydrocannabinol to separate on a chiral stationary phase to provide a trans-(?)-?9-tetrahydrocannabinol composition comprising at least about 99% by weight of trans-(?)-?9-tetrahydrocannabinol based on the total amount of trans-(?)-?9-tetrahydrocannabinol and trans-(+)-?9-tetrahydrocannabinol. The invention also relates to methods for treating or preventing a condition such as pain comprising administering to a patient in need thereof an effective amount of a trans-(?)-?9-tetrahydrocannabinol having a purity of at least about 98% based on the total weight of cannabinoids.

Abstract: Methods for making trans-(?)-?9-tetrahydrocannabinol and trans-(+)-?9-tetrahydrocannabinol are disclosed herein. In one embodiment, a trans-(?)-?9-tetrahydrocannabinol composition is prepared by allowing a composition comprising (±)-?9-tetrahydrocannabinol to separate on a chiral stationary phase to provide a trans-(?)-?9-tetrahydrocannabinol composition comprising at least about 99% by weight of trans-(?)-?9-tetrahydrocannabinol based on the total amount of trans-(?)-?9-tetrahydrocannabinol and trans-(+)-?9-tetrahydrocannabinol. The invention also relates to methods for treating or preventing a condition such as pain comprising administering to a patient in need thereof an effective amount of a trans-(?)-?9-tetrahydrocannabinol having a purity of at least about 98% based on the total weight of cannabinoids.

Abstract: Methods for making trans-(?)-?9-tetrahydrocannabinoI and trans-(+)-?9-tetrahydrocannabinol are disclosed herein. In one embodiment, a trans-(?)-?9-tetrahydrocannabinoI composition is prepared by allowing a composition comprising (±)-?9-tetrahydrocannabinol to separate on a chiral stationary phase to provide a trans-(?)-?9-tetrahydrocannabinoI composition comprising at least about 99% by weight of trans-(?)-?9-tetrahydrocannabinol based on the total amount of trans-(?)-?9-tetrahydrocannabinol and trans-(+)-?9-tetrahydrocannabinol. The invention also relates to methods for treating or preventing a condition such as pain comprising administering to a patient in need thereof an effective amount of a trans-(?)-?9-tetrahydrocannabinoI having a purity of at least about 98% based on the total weight of cannabinoids.