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- Elemental analysis calculated for (1d) C10H7ON: C, 76.4; H, 4.5; N 8.9% and found C, 76.3; H, 4.7; N, 8.7. Elemental analysis calculated for (1f) C10H8O3: C, 68.2; H, 4.5% and found C, 68.4; H, 4.6