[CH3:1][O:2][C:3]1[CH:4]=[CH:5][C:6]([C:12](=O)[CH2:13][O:14][CH3:15])=[C:7]([CH:11]=1)[C:8](O)=[O:9].O.[NH2:18][NH2:19]>>[CH3:1][O:2][C:3]1[CH:11]=[C:7]2[C:6]([C:12]([CH2:13][O:14][CH3:15])=[N:18][NH:19][C:8]2=[O:9])=[CH:5][CH:4]=1This compound is obtained according to the procedure described in 1.2. by reacting unpurified 5-methoxy-2-(methoxyacetyl)benzoic acid with hydrazine hydrate.
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