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In the title compound, C 11 H 8 N 6 O 4 S, the plane of the coumarin aromatic ring is twisted by 17.2 (2)° with respect to the plane of the azide group bound to the methyl­ene substituent, whereas it is twisted by 83.2 (2)° to the plane of the azide attached to the sulfonyl group. The crystal structure is stabilized by weak C—H⋯O inter­actions, leading to the formation of dimers with  R22 (12) graph-set motifs. These dimers are further linked by weak S—O⋯π and π–π contacts [centroid–centroid distance = 3.765 (2) Å], leading to the formation of a layered structure.

4-Azidomethyl-7-methyl-2-oxo-2H-chromene-6-sulfonyl azide