The K-14 compound is a chemical produced and researched in the Institute.
The K-14 compound is seen being injected into a Generation 3 synth by Dr. Volkert. The doctor verbalized the lack of a visible reaction to the compound. He then decided to move forward to the next trial, instructing the synth to report any symptoms following this stage.
↑Dean Volket: "No visible reaction to the K-14 compound. We'll start the next trial, then.The dosage will be much larger this time, and the side effects will likely be more pronounced." Synth: "Will there be any pain?" Dean Volkert: "I honestly don't know. I suppose it's your job to find out. Now hold still.There, all done.You can return to your duties, and remember to record every symptom you experience in detail." Synth: " I hope I'll prove a useful test subject for you, doctor." Dean Volkert: "Mm hm." (Synth worker[verification needed] and Dean Volkert's dialogue)