A Cannabis plant through its entire growth cycle produces between 450 to 500 compounds where 113 of them are cannabinoids. One of the most notorious cannabinoids is THC or Tetrahydrocannabinol. It is the one that gave Marijuana its troublesome name. Delta-9 Tetrahydrocannabinol is the cannabinoid that acts as a psychoactive. It starts out as THCa (Tetrohydrocannabinolic acid) but when it heats up, it breaks down to THC. THC is one of the primary cannabinoids and is found in abundance.