. 2012 Jan 1;4(1):149–161. doi: 10.5539/gjhs.v4n1p149

Table 3.

Chemical shifts of the relevant peaks in the 13C NMR spectra of the polymer fractions of the gums and synthetic polymyrcene in CDCl3

	Synthetic Polymyrcene		Mastic gum		Kurdica gum	Mutica gum
Assignment	Chemical Shift		Chemical Shift		Chemical Shift	Chemical Shift
C1	30.73	30.56^a	30.90	31.50^a	30.90	30.93
C2	138.91	138.86^a	38.92	139.50^a	38.90	39.00
C3	124.62	124.52^a	124.81	125.00^a	124.78	124.70
C4	27.00	26.74^a	27.96	28.10^a	27.76	27.93
C5	37.73	36.85^a	37.85	38.10^a	37.63	37.90
C6	27.04	26.92^a	27.63	27.80^a	27.60	27.80
C7	124.37	124.36^a	125.00	125.00^a	125.05	125.10
C8	131.23	131.01^a	130.93	131.80^a	130.80	131.00
C9	17.57	17.64^a	18.78	18.80^a	18.70	19.01
C10	26.59	25.62^a	26.50	26.70^a	26.50	27.03

Literature values from reference (6, 20).