Va. Code § 4.1-1400
For the purposes of this chapter, unless the context requires a different meaning:
"Synthetic derivative" means a chemical compound produced by man through a chemical transformation to turn a compound into a different compound by adding or subtracting molecules to or from the original compound.
"Tetrahydrocannabinol" means any naturally occurring or synthetic tetrahydrocannabinol, including its salts, isomers, and salts of isomers whenever the existence of such salts, isomers, and salts of isomers is possible within the specific chemical designation and any preparation, mixture, or substance containing, or mixed or infused with, any detectable amount of tetrahydrocannabinol. For the purposes of this definition, "isomer" means the optical, position, and geometric isomers.
Va. Code § 4.1-1400