1-{(Z)-[2-Methoxy-5-(trifluoromethyl)anilino]methylidene}naphthalen-2(1H)-one

1-{(Z)-[2-Methoxy-5-(trifluoromethyl)anilino]methylidene}naphthalen-2(1H)-one

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The title compound, C19H14F3NO2, crystallizes ribavirin coupon in the keto–amine tautomeric form, with a strong intramolecular N—H.O hydrogen bond.The molecule is almost planar; the dihedral angle between the naphthalene ring system and the benzene ring is 4.60 (7)°.

In the crystal, molecules are linked into chains along the c axis by C—H.O hydrogen bonds.The F atoms of the altitude sunscreen trifluoromethyl group are disordered over two positions with refined site occupancies of 0.668 (9) and 0.

332 (9).