What's THCA and So how exactly does it vary from THC? How can THCA Differ from THC? Chemical Structure: THCA and THC have equivalent molecular constructions but vary in a single very important part: THCA contains a carboxylic acid group (therefore the "A" in its name), even though THC won't. https://ira-conversion-to-gold77554.blogofchange.com/34357465/whole-plant-extracts-can-be-fun-for-anyone