. 2016 Jul 25;11(7):e0159547. doi: 10.1371/journal.pone.0159547

Table 4. High-resolution mass data of PA6 cyclic oligomers and PA66 cyclic monomer and oligomers.

Peak	Cyclic monomer and oligomers	Formula	Mass (m/z)
Peak	Cyclic monomer and oligomers	Formula	Calculated	Observed
Peak A	PA6 dimer	C₁₂H₂₃N₂O₂	227.1760	227.1779
Peak C	PA6 trimer	C₁₈H₃₄N₃O₃	340.2600	340.2606
Peak D	PA6 tetramer	C₂₄H₄₅N₄O₄	453.3441	453.3427
Peak E	PA6 pentamer	C₃₀H₅₆N₅O₅	566.4281	566.4277
Peak F	PA6 hexamer	C₃₆H₆₇N₆O₆	679.5122	679.5108
Peak G	PA66 monomer	C₁₂H₂₃N₂O₂	227.1760	227.1767
Peak H	PA66 dimer	C₂₄H₄₅N₄O₄	453.3441	453.3438
Peak I	PA66 trimer	C₃₆H₆₇N₆O₆	679.5122	679.5123