  Recent observation of several microwave transitions in H2O2 from the
interstellar medium [Astron. Astrophys., 531, L8 (2011)] raised interest to
this molecule as yet another sensitive probe of the tentative variation of the
electron-to-proton mass ratio mu. We estimate sensitivity coefficients of the
microwave transitions in H2O2 to mu-variation. The largest coefficient for 14.8
GHz transition is equal to 37, which is comparable to highest sensitivities in
methanol and an order of magnitude higher than sensitivity of the tunneling
transition in ammonia.
