Figure 2From: Consolidating metabolite identifiers to enable contextual and multi-platform metabolomics data analysisMetabolite identifier integration. Strategy for integrating metabolite identifiers. (1) The reference library RefLib specifies an identifier and its links. Upon import to the MetMask database, these identifiers are assigned to Group 1. (2) The KEGG entry c00037 links to both the CAS number 56-40-6 and the synonym glycine and is therefore merged to Group 1. (3) The PlantCyc entry gmp overlaps with the identifiers in Group 1 but only in a single synonym and is therefore assigned to the new identifier group, Group 2. Group 2 retains the mapping to the conflicting synonym G but has this link annotated as weak.Back to article page