Additional file 2 of A compound-specific method for measuring the stable carbon isotopic composition of amino acids: elimination of the effect of isotopic fractionation during derivatization

Additional file2 Supplementary Table 1. The δ13C values of derivatives, isopropyl group, pivaloyl group, and amino acids for the reference materials. Supplementary Table 2. The δ15N values of derivatives, isopropyl group, pivaloyl group, and amino acids for the reference materials. Supplementary Table 3. The δ13C and δ15N of amino acids in wild species (sea slug and sponge)