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What is Delta 9?

Delta-9 refers to delta-9-tetrahydrocannabinol, commonly known as THC.

[Updated Nov. 15, 2025]

Delta-9 Molecule 


What Is Delta-9?


Delta-9 THC is a naturally occurring chemical compound found in the cannabis plant.
It belongs to a family of plant chemicals called cannabinoids, which are produced in the plant’s resin glands (the trichomes).

At the molecular level, Delta-9 is an organic molecule made of carbon, hydrogen, and oxygen with the formula C₂₁H₃₀O₂.
What defines it — and gives it its name — is the placement of a double bond on the ninth carbon atom in its molecular chain. That structural feature is what separates it from similar cannabinoids like Delta-8 or Delta-10.

In the cannabis plant, Delta-9 forms through the breakdown of THC-A (tetrahydrocannabinolic acid) when it’s exposed to heat, drying, or aging. This process is called decarboxylation.

Delta-9 is considered the primary and most abundant form of THC found in traditional marijuana strains and is a major contributor to the plant’s chemical profile.

In simple terms:
Delta-9 is a specific type of THC distinguished by the location of a double bond in its structure, produced naturally by the cannabis plant, and classified as one of its primary cannabinoids.

Published by Tenn Canna Publishing



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