ArenaviridaeCoronaviridaeFiloviridae(s) - 2-ethylbutyl 2 - ((2S) - ((2S)) has an antiviral property against the virus selected from the group consisting of Paramyxoviridae3S,4R,5R) - 5 - (4-aminopyrrolo [2]1 - F] [1]24) triazine 7-yl - 5-cyano-34 - dihydroxytetrahydrofuran 2-yl) methoxy (phenoxy) phospholyl) amino propanoatesProvides a novel salt and crystal form of the compound I.Solution: About 22.3 degrees, 16.9 degrees, and θ ± 0.2 θ Provides a crystal form of said compound I characterized by an X-ray powder diffraction (XRPD) pattern with peaks.Diagram
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