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. Author manuscript; available in PMC: 2011 Feb 1.
Published in final edited form as: J Endod. 2009 Dec 14;36(2):315. doi: 10.1016/j.joen.2009.10.028

Figure 1.

Figure 1

1H NMR spectrum of (A) chlorhexidine acetate with characteristic peaks at 6.85 ppm and 6.71 ppm (labels 1–5 correspond to labeled chemical structure of chlorhexidine and cleavage sites are labeled CS-1 and CS-2) (B) p-chloroaniline with characteristic peaks at 7.01 ppm and 6.56 ppm (labels a and b correspond to labeled chemical structure of PCA). (C) Reaction precipitate sampled at 60 minutes with n-propanol added at 0.4 mg/ml as an internal standard (labels 1–3 corresponding to labeled chemical structure of n-propanol). All spectra were taken with 400-MHz Varian NMR System at 25°C, acquiring 32 scans, in d6-DMSO solvent.