Organic compound has the molecular formula C9H10O2. IR spectrum showed a broad band in the region 3550-3300 cm -1 and a sharp peak at 1710 cm -1 and another peak at 1250 cm-1. 1H NMR spectrum showed signals at δ 3.15 (s, 1H), 3.6 (s, 3H), 4.4 (s, 3H), 7.15 (d, 2H) and δ 7.23 (d, 2H), what the structural formula for this compound? Organic compound has the molecular formula C3H8O. IR spectrum showed a broad band in the region 3550-3300 cm -1 and there is no peaks in the region 2500-1500 cm -1. 1H NMR spectrum showed three signals at δ 4.81 (s, 1H), 4.00 (septet, 1H) and δ 1.10 (d, 6H), what the structural formula for this compound?