Fig. 2From: Linking a rapid throughput plate-assay with high-sensitivity stable-isotope label LCMS quantification permits the identification and characterisation of low β-L-ODAP grass pea linesSynthesis of di-13C-β-L-ODAP. L-DAP was acylated in a two-stage process using diethyl oxalate-13C2 to donate the 13C producing the isotopologue for mass spectrometry.Back to article page