United States federal ban on synthetic hemp cannabinoids begins November 12

A new federal provision regarding the definition of hemp takes effect on November 12, targeting cannabinoids that cannot be naturally produced by the cannabis plant. This includes substances such as THC-O, THCV, Delta 10, and THCP acetate. Under the new regulations, these synthetic cannabinoids will no longer be classified as hemp, potentially subjecting them to federal controlled-substance restrictions if they meet the statutory definition of marijuana or tetrahydrocannabinols (THC).

The regulatory shift stems from the Continuing Appropriations, Agriculture, Legislative Branch, Military Construction and Veterans Affairs, and Extensions Act, 2026. While a subsequent act signed by President Trump delayed most provisions until December 11, the November 12 deadline remains in effect specifically for products containing non-naturally occurring cannabinoids.

Other naturally occurring compounds, such as THCA and Delta 8 THC, are subject to a separate deadline of December 11. The Food and Drug Administration has yet to publish its required list of naturally occurring cannabinoids, and legal interpretations regarding substances like THC-O have previously seen conflicting rulings between the DEA and the Fourth Circuit Court of Appeals.