Glucose-6-phosphate and fructose-6-phosphate are annotated with 2 different CAS numbers, which seem to match with the name of the node. These both map to http://www.hmdb.ca/metabolites/HMDB01401 .
The mapping to Wikidata is different though, and I cannot find the reason for this incorrect mapping on the HMDb page...
For this pathway https://www.wikipathways.org/index.php/Pathway:WP134 , has two different compounds in there which map to the same HMDB ID.
Glucose-6-phosphate and fructose-6-phosphate are annotated with 2 different CAS numbers, which seem to match with the name of the node. These both map to http://www.hmdb.ca/metabolites/HMDB01401 .
The mapping to Wikidata is different though, and I cannot find the reason for this incorrect mapping on the HMDb page...