The present invention relates to a metal-organic framework comprising (i) at least one metal M selected from the group consisting of Na, K, Ca, Mg, Zn, Fe, Mn, Cu, Al, Ni, and Mo in cationic form; and at least one substituted pyrazolate compound of formula (I). Further, the present invention relates to the use of the metal-organic framework of the invention and methods of applying the metal-organic framework of the invention for reducing nitrification. Moreover, the present invention relates to agrochemical mixtures and compositions comprising the metal-organic framework of the invention as well as to a method of treating a fertilizer comprising the application of a metal-organic framework of the invention.