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. 2020 Sep 1;5(36):23322–23333. doi: 10.1021/acsomega.0c03169

Table 3. Structure Character of the Soluble Compounds Formed from Furfural.

no tR/min formula molecular mass core structure functional group DBE DBE/C (H-2O)/C
1 10.13 C5H8O4 132.04 noncyclic hydroxy, carbonyl, carboxyl 2 0.4 0
2 10.57 C4H6O4 118.02 noncyclic hydroxy, carbonyl, carboxyl 2 0.5 –0.5
3 16.60 C8H10O3 154.06 carbocyclic hydroxy, carbonyl 4 0.5 0.5
4 17.01 C10H8O4 192.04 carbocyclic hydroxy, carbonyl 7 0.7 0
5 18.39 C12H14O4 222.09 carbocyclic hydroxy, carbonyl 6 0.5 0.5
6 19.12 C9H12O3 168.07 carbocyclic hydroxy, carbonyl 4 0.44 0.67
7 19.80 C9H12O4 184.07 carbocyclic hydroxy, carbonyl 4 0.44 0.44
8 20.94 C10H8O4 192.04 carbocyclic hydroxy, carbonyl 7 0.7 0
9 21.50 C15H12O5 272.07 carbocyclic hydroxy, carbonyl 10 0.67 0.13
10 22.21 C10H10O3 178.06 carbocyclic hydroxy, carbonyl 6 0.6 0.4
11 23.26 C10H8O4 192.04 carbocyclic hydroxy, carbonyl 7 0.7 0
12 24.13 C10H8O4 192.04 carbocyclic hydroxy, carbonyl 7 0.7 0
13 25.22 C10H8O4 192.04 carbocyclic hydroxy, carbonyl 7 0.7 0
14 25.57 C11H10O5 222.05 carbocyclic hydroxy, carbonyl 7 0.64 0
15 26.28 C15H12O5 272.07 carbocyclic hydroxy, carbonyl, carboxyl 10 0.67 0.13