NMR Chemical Shift Reference
Browse and search a reference table of typical proton (1H) NMR chemical shift values grouped by functional group type.
Use the NMR Chemical Shift Reference
Showing – entries
| Group | Proton Environment | δ min (ppm) | δ max (ppm) | Typical δ |
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No matching entries found.
Functional-group ranges are approximate 1H values relative to TMS. Solvent/impurity rows name their host solvent. Shifts vary with solvent, temperature, concentration, water content, and substituent effects; a ppm match alone does not identify a compound. Exchangeable protons (O-H, N-H) are marked with *.
Summary
Browse and search a reference table of typical proton (1H) NMR chemical shift values grouped by functional group type.
How it works
- Select a functional group category from the filter tabs or choose "All".
- Use the search box to filter by proton environment, keyword, ASCII formula, or an observed δ value in ppm.
- The table updates instantly to show matching proton environments and their typical δ (ppm) ranges.
- Click any row to highlight it for easy reading.
- Use the typical δ values as a starting point — actual shifts vary with solvent, concentration, and neighboring groups.
Use cases
- Assign peaks in a 1H NMR spectrum to specific proton environments.
- Verify expected chemical shifts before running an NMR experiment.
- Study for organic chemistry exams using the grouped shift ranges.
- Quickly distinguish aldehyde (≈9–10 ppm) from carboxylic acid (≈10–12 ppm) signals.
- Compare aromatic vs. vinyl proton ranges when interpreting unknowns.
- Reference during retrosynthesis planning to predict NMR signatures.
Frequently Asked Questions
Last updated: 2026-09-25 ·
Reviewed by Nham Vu