Welcome Matt! We do not know what the chemical is, but the opperative is Form- HCO- could be an aldehyde, amide, ic, etc.

I hazard a guess an it is Randy's version of the sweat jar. Drop as a trap on Michael's group or just a get out of jail free card if he is attacked by other "zombies" not part of his tribe. Raydon Labs could be a supplier, or it could be the evil genius. We need some way to get back there and maybe they buy the chemical in bulk, from Acme and Willie Coyote, but put it in smaller sized bottles as stockable intermediates with their own labels.