That said, they make it out to be a derivate of VX. When the gas is released inside CTU, Buchanan says over the intercom that Sentox VX-1 nerve gas has been released.
In real life, VX is much harder to destroy than Sarin as it cannot be easily burned. It takes a higher temperature to incinerate VX.
Oh, my. Also, the said the Sintox was destroying the seals of the safe room at CTU, so I thought maybe it could get out through the seals of the pipes... Still think it's a little thin, but it doesn't matter because it isn't going to happen anyway.