Overview
PostMN MassQL searches the processed spectra from a completed GNPS2 networking job. Researchers can select, edit or write fragmentation-pattern queries and inspect which spectra satisfy them, alongside available library annotations.
What can this tool do?
Common uses
- Screen networking results for diagnostic fragments or neutral losses.
- Export spectra satisfying selected query conditions.
Scientific fit
Primary function
Spectral processing and comparison
Data compatibility
Inputs
Mass spectra
Outputs
Mass spectra, Human-readable report
Input formats
Public GNPS2 CMN/FBMN task ID and MassQL query text
Output formats
MGF, CSV or TSV
Scope and considerations
Designed for
- Chemical-pattern searching after classical or feature-based molecular networking.
Not designed for
- Raw-file preprocessing or conclusive identification from a query hit alone.
Important requirements
- A completed, public GNPS2 CMN or FBMN task and a valid MassQL query.
Considerations
- A query hit supports a fragmentation hypothesis; it does not validate a full structure.
- The app searches processed spectra, so upstream processing affects the available evidence.
- Retain the executed query text and upstream task identifier with exported results.
Access and documentation
Publicly hosted MetaboApp. GNPS2 infrastructure is open to the academic community; its documentation directs industry users to the maintainers or UCR Technology Transfer. Hosted access does not establish a software or reference-data license.
Evidence and review
Reviewed against the linked official app documentation on 2026-09-10. No standalone publication for this particular app was verified; the documentation citation identifies the reviewed implementation. Underlying method and application papers are not presented as dedicated app papers. No analysis job or independent benchmark was run; no developer verification is claimed.
No dedicated scholarly publication is listed. Follow the official documentation and resource-specific citation guidance.
Software and documentation citations
- GNPS2 Documentation. PostMN MassQL. Accessed 10 September 2026. Documentation
Related tools
Entry history
Changes to this catalogue entry, not the tool's software release history. Acceptance and editorial review are separate.
- 2026-09-10 · First committed entry
Add curated MassQL and reverse-metabolomics apps
View change · Entry at this revision