14 Chemical Formula: C4H6O₂ Molecular Weight: 86.0892 Elemental Analysis: C, 55.81; H, 7.02; O, 37.17 unk-3 7.32 13 4.90 4.90 4.87 4.86 7.28 12 f1 (ppm) 7.24 4.90 4.85 4.80 4.75 4.70 4.65 4.60 4.55 f1 (ppm) 11 7.20 10 4.56 9 8 7 2858944 6 f1 (ppm) C4H6O2 1.00-I 1.03- 5 4 3 3.19- 2 1 0 -1 -7000 -6500 -6000 -5500 -5000 -4500 -4000 -3500 -3000 -2500 -2000 -1500 -1000 -500 -0 --500 -2