FYI. This patent talks about using various aldehyde donors (as Evan mentioned) including DMH equilibrium compounds in water to stabilize hydrogen peroxide though that stabilization is described as preventing too much reaction from decomposing enyzmes often found in some organic matter (such as recycled paper). They don't mention stabilization with respect to sunlight. Anyway, I'm going to see if most of the conversions at TFP that went well didn't use CDX. The same should be checked here as well if possible.