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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 2.

Figure 2

(A) Expanded aromatic region of the 1H NMR spectrum of precipitate sampled at 60 minutes. Characteristic peaks in the PCA doublet region are not present. (B) Expanded aromatic region of the 1H NMR spectrum of the precipitate sampled at 60 minutes with 0.1 mg PCA added. Characteristic peaks for PCA in the PCA doublet region are labeled. Spectra were taken with 400-MHz Varian NMR System at 25°C, acquiring 32 scans, in d6-DMSO solvent.