Server Migration Notice

Starting Aug. 16, 2025 at 9:00 AM (Eastern Standard Time), this server will be shut down temporarily to migrate services to our new server at https://colmar.cloud. Please update your bookmarks accordingly.

All saved user jobs, files, and settings will be migrated automatically. The new server will be fully operational by Aug. 18, 2025.

This current server will remain accessible until Aug. 31, 2025. However, any jobs submitted after Aug. 16, 2025 at 9:00 AM (EST) will NOT be migrated to the new server.

CCIC OSU

COLMAR 13C-1H HSQC Query

STEP1 Please paste your HSQC peak list (in ppm, 1st column: 1H, 2nd column: 13C, separated by space(s))
or
or read a spectral file into peak list field

I agree to terms and conditions.
Then


STEP2 Automatic referencing (Important)

The server will try to do a pattern matching between input peaks and peaks of some universal existing known compounds. Please examine the below plot carefully then un-check any of them that does NOT exist in your mixtures. Click "Calculate" to calculate referencing then click apply. Note that the input referencing error must be within 7.5ppm (Carbon) and 0.5ppm (Proton) for this part to work.

DSS Alanine Leucine Glucose Lactic Acid
When doing auto-referencing, matching at least out of known peaks.
Calculated referencing: 1H: 13C:
to all input peaks


STEP3 Option 1: submit peaks for data base query and display (without any uniqueness filtering)

Your name and institute*
1H chemical shift cutoff (ppm): 13C chemical shift cutoff (ppm): matching ratio cutoff


List of compounds in our database

Reference

Questions or comments? Please feel free to contact us.

Acknowledgement

This web server and the research that led to it is supported by the National Institutes of Health (Grant R01 GM 066041) and SECIM (Southeast Center for Integrated Metabolomics) grant U24 DK097209-01A1

*This information is only used for the compilation of our webserver usage data.

This server is last updated at September 14 2024 11:34:33.