I have a list of compounds that came up after LC-MS/MS experiments for untargetted metabolomics. I do not have the KEGG IDs or HMDB IDs for those compounds. When I input this list in the online MetaboAnalyst tool, it says that more than half of the compounds could not be mapped to any databases. How do I surpass this issue without losing out on the data??
The limitation is our knowledge on those compounds beyond names and structures. Please refer to this post.