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. 2019 Dec 19;18(1):6. doi: 10.3390/md18010006

Figure 4.

Figure 4

Figure 4

Figure 4

Nuclear magnetic spectra and repeat disaccharide unit of clam heparinoid (G15). (a) 1H NMR spectra of clam heparinoid. (b) 13C NMR spectra of clam heparinoid. (c) COSY spectra of clam heparinoid. (d) HSQC spectra of clam heparinoid. (e) TOCSY spectra of clam heparinoid. (f) NOESY spectra of clam heparinoid. (ANS6S: N,6-disulfated glucosamine, ANS3S6S: N,3,6-trisulfated glucosamine, ANAC: N-acetyl glucosamine, I2S: 2-sulfated IdoA, and G: glucuronic acid). (g) Tetrasaccharide repeat unit of clam heparinoid. A = IdoA2S; B = GlcNS3S6S (R1 = SO3-) or GlcNS6S (R1 = H); C = GlcA; D = GlcNS6S (R2 = SO3-, R3 = SO3-) or GlcNAC (R2 = H, R3 = HAc).