Nucleotides are organic molecules that serve as the monomers, or subunits, of nucleic acids like DNA and RNA. The building blocks of nucleic acids, nucleotides are composed of a nitrogenous base, a five-carbon sugar (ribose or deoxyribose), and at least one phosphate group.
ANSWER: A stain would not typically void a mattress warranty. You need to read the actual language of the warranty. If you do not have a copy, demand a copy from the company. It is very likely that the warranty says nothing about stains voiding the warranty.
One thing to keep in mind is that the way mattress warranties work, is that if the mattress gets stained or soiled in any way, the warranty is voided. So, if you spill a cup of coffee on your bed and it stains your mattress, the warranty is now voided.