Understanding Delta-8-THC: Where Does it Come From?

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Delta-9-tetrahydrocannabinol (THC) may be the most well-known cannabinoid in cannabis, but according to the National Hemp Association, scientists believe that there may be more than 100 different cannabinoids in cannabis.

One cannabinoid that has recently emerged in the market is Delta-8-THC.

As previously reported by Hemp Grower, the National Cancer Institute defined Delta-8-THC in a statement as an analogue of THC that contains neuroprotective properties that can increase appetite and reduce nausea, anxiety and pain. It produces some psychotropic effects that are believed to be less potent than Delta-9, the primary form of THC found in cannabis.

The legal status of Delta-8 remains unclear, as some say it’s federally legal under the 2018 Farm Bill, while others consider it a loophole.

« In terms of the legality, I think everyone is confused, » said Scott Churchill, the director of scientific operations at MCR Labs, an independent cannabis testing laboratory based in Massachusetts. « There are people that say it’s illegal because it’s a derivative of cannabis, which I believe is how the original prohibition was written, stating that anything that is a derivative of cannabis is illegal. But then the hemp farm bill came out and depending on that language [in the Farm Bill] is whether or not it created a loophole for non-Delta-9. »

Delta-8 is reported to have similar psychoactive effects as Delta-9, but the effects are much more subdued, said Roger Brown, the president and founder of ACS Laboratory, a cannabis, hemp and CBD testing laboratory in Florida.

Delta-8 vs. Delta-9: Chemical Differences:

The chemical structure between Delta-8 and Delta-9 is similar, as Delta-8 is just an isomer of Delta-9, Brown said.

« The only difference between Delta-8 and Delta-9-THC is where that double bond is located on the chain of carbon atoms, » according to ACS Laboratory. « Delta-8 has a double bond on the 8th carbon chain, and Delta-9 has a double bond on the 9th carbon chain. This seems like a small distinction, but it’s significant enough to produce slightly different cognitive and physical effects. »

And Jeremy Sackett, the founder and owner of Cascadia Labs, a cannabis-centric testing laboratory in California, agrees, as he said there is a minimal difference between the two isomers because essentially the only difference is the double bond location.

RELATED: Should Your Business Invest in Delta-8-THC?

How is Delta-8 Made?

As previously reported by Hemp Grower, Delta-8 is a naturally occurring cannabinoid, most commonly converted in a laboratory from Delta-9-THC or CBD (cannabidiol).

There are several standard operating procedures (SOP’s) that can be used to extract Delta-8, said Allison Justice Ph.D., CEO of The Hemp Mine, a vertically integrated hemp CBD business in South Carolina.

Although The Hemp Mine does not make Delta-8, Justice has gained an extensive knowledge of the extraction process from others in the industry and from being in the industry for more than ten years. She broke down the Delta-8 extraction process:

The flower is extracted so that the material that’s left is an isolate, or pure CBD, and then that isolate goes through an extensive process to get turned into a distillate, Justice said.

“Once it is isolate, a solvent is added to melt it down, and then an acid reagent is added to cause the reaction,” Justice said. “The material is then neutralized with an alkaline material, and this it is distilled to clean it up.”

The final distillate ends up being 60% to 70% Delta-8 and roughly 2% to 6% Delta-9, but if a company is trying to make a compliant hemp product, it has to be under the 0.3% THC limit, Justice said.

“Certain companies that are doing it properly will run it through extensive chromatography to remove the Delta-9 or dilute it down to be compliant [with the U.S. Department of Agriculture’s (USDA’s) final rule on hemp], » Justice said.

From there, the distillate is sent to the lab for testing.

As Delta-8 is a relatively new cannabinoid, the testing process is not always perfect, as many labs do not have the proper SOP’s or equipment in place to properly separate Delta-8 from Delta-9, Justice said.

Delta-8 Testing and Measurement

According to the ACS Laboratory website, the lab uses « Ultra High Performance Liquid Chromatography (HPLC) machinery to measure Delta-8-THC potency in flower, edibles and extracts. »

« There are multiple different ways that a testing laboratory could analyze for Delta-8, but the most common would be liquid chromatography methods, » said Sackett of Cascadia Labs.

The testing process begins when a Delta-8 sample is brought into the laboratory and that sample is extracted. When the sample is extracted, it means the lab is trying to pull out what they are looking for via Delta-8, Delta-9, pesticides, solvents, etc., he said.

« Then, we extract the sample and try to leave behind any interferences, such as the plant material, fats and other stuff from the concentrate, so we can extract exactly what we are looking for, » Sackett said. « That extraction goes onto an instrument, and we run it through the instrument. »

After the sample gets run, it gets measured against a known reference material, and then the lab can record the percentage of Delta-8 or Delta-9 in the sample, he said.

Brown echoed this sentiment, noting this was part of the ACS process, as well.

« When there is a known standard, you measure the sample that you receive against the known standard, and then you can produce results based on the potency level or percentage of the known standard, » Brown said.

In general, Sackett said he had not experienced any significant challenges to test for Delta-8 in cannabis flower or cannabis products; however, he said the challenges related to Delta-8 are the same challenges associated with any other minor cannabinoid, which is the availability of reference materials and non-standardized methods.

« Up until fairly recently, maybe within the last five years or so, reference materials were not available for Delta-8, » Sackett said. « The availability of reference materials has been a limiting factor for the ability to test for these alternative cannabinoids, but now it is available. »

Read more Hemp Grower Delta-8 coverage here.

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