 THC-O-phosphate

THC-"O"-phosphate is a water-soluble organophosphate ester derivative of tetrahydrocannabinol (THC), which functions as a metabolic prodrug for THC itself.It was invented in 1978 in an attempt to get around the poor water solubility of THC and make it easier to inject for the purposes of animal research into its pharmacology and mechanism of action.