1. Metabolites Arabidopsis thaliana http://pmn. plantcyc.org/PLANT/class-instances?object=Compounds
2. Metabolites Escherichia coli http://biocyc.org/ECOLI/class-instances?object=Compounds
3. Protocol for Plant Leaf Metabolite Profiling http://fiehnlab.ucdavis.edu/publications/Arabidopsis% 20Protocols%202nd%20ed%20-%20Fiehn.pdf
4. Metabolomics Standards Initiative http://msi-workgroups. sourceforge.net
5. Standardization in Metabolomics Experiments http://129.128.185.121/metabolomics_society/standardization. html