Cannabinoids are chemicals that can be found in all sorts of things that you might interact with on a day to day basis, but suffice it to say that the natural forms of these chemicals are starting to give way to the rising popularity of artificial variants that are made in clinically sanitized labs. The reason behind this is that synthetic cannabinoids have some specific advantages such as lower costs of production as well as a much more versatile chemical formula that is easier to streamline once all has been said and is now out of the way.
That said, you should know that a k2 spice paper that you buy might have any of a wide range of synthetic cannabinoids that are becoming rather commonplace these days. Choosing the right one can help you get a better outcome than might have been the case otherwise. A very commonly found cannabinoid that is entirely synthetic in nature is called Naphthoylindoles, and it was among the first cannabinoids that scientists were able to synthesize so there are more advanced variants that you can look into as well.
Another form of synthetic cannabinoid that you might be interested in trying out is Cyclohexylphenols. It is a much more technically sound cannabinoid that has been optimized over the course of several years of research, and the people that made it swear by it. Anyone that uses this cannabinoid has really positive experiences that they associate with it, and it is generally thought to be an excellent spice that beginners can use as well since it is designed to give a very mild effect that would never overwhelm you all in all.