Elders' blood differs as blood of dissimilar creatures, humans, clans, vampires. It is more concentrated and strong comparing to weaker vampires. See the citation beneath. This applies to the most of supernaturals.
Some particular elders and elders of some clans as whole have special properties in their blood for kindreds' taste and mages, but I didn't resemble any common qualities among all elders (except more blood points in the same volume and other issues for any vampire's blood as the blood-bonds).
Elders. From the 3rd Edition (revised).
Remember that elder vampires concentrate their blood - while the
volume of blood in their bodies is no greater than any other
vampire's, each pint of blood is worth more than one point.
~20-25 bp per creature, more concentrated than human's. +1 resist the
beast rolls for each digested blood point. Also, werewolf won't die
from blood loss even with only 1 bp. Pure breeds' blood gives celerity
and potence points to the vampire.
Daemons. Nothing in the corebook, something from wiki, but I can't verify that this is from the official books. I haven't that books (Demonic Investment, MTSC: Infernalism: The Path of Screams, p. 73 –76 Storytellers Handbook to the Sabbat The Book of Madness).
Demons cannot be blood bonded nor can one be bonded to a demon. To
drink from a demon's blood provides no nourishment to a vampire and
will either give an extremely pleasure rush or make one very sick. If
a vampire repeatedly shares blood with a demon, one of the devil's
marks will appear on them.