The title compound ethyl (2-amino-4-(2-chlorophenyl)-4H-benzo-[h]-chromene-2-yl) formate (C22H18ClNO3, Mr = 379.82) was synthesized and characterized by X-ray single-crystal diffraction analysis. The crystal belongs to monoclinic, space group C2/c with a = 25.168(4), b = 9.584(1), c = 16.503(3) ? b = 111.14(1), Z = 8, V = 3713(1) 3, Dc = 1.359 g/cm3, m(MoKa) = 0.228 mm-1, F(000) = 1584, R = 0.0565 and wR = 0.1320 for 1749 observed reflections (I > 2s(I)). X-ray analysis reveals that the C(1), C(2), C(3), C(4), C(5) and O(1) atoms form a six-membered ring which adopts a boat conformation. In this ring, the bond distances of C(1)C(2) and C(4)C(5) are 1.356(4) and 1.357(4) ? respectively, indicating they are C=C double bonds. In addition, there exist intra- and intermolecular hydrogen bonds in the crystal structure. The title compound ethyl was synthesized and characterized by X-ray single-crystal (C22H18ClNO3, Mr = 379.82) The crystal belongs to monoclinic space group C2 / c with a = 25.168 (4), b = 9.584 (1), c = 16.503 (3)? b = 111.14 (1), Z = 8, V = 3713 (1) 3, Dc = 1.359 g / cm3, m (MoKa) = 0.228 mm -1, F (000) = 1584, R = 0.0565 and wR = 0.1320 for 1749 observed reflections (I> 2s (I) -ray analysis reveals that the C (1), C (2), C (3), C (4), C (5) and O (1) atoms form a six-membered ring which holds a boat conformation. ring, the bond of C (1) C (2) and C (4) C (5) are 1.356 (4) and 1.357 (4)? respectively, indicating they are C = C double bonds. In addition, there exist intra- and intermolecular hydrogen bonds in the crystal structure.