Japan's free SDBS provides spectral records for organic compounds, including NMR, mass spectrometry, ESR, and infrared data.
mzCloud
mzCloud offers a searchable spectral database with high-resolution mass spectra to help identify compounds in scientific analyses.
About mzCloud
mzCloud is a searchable mass spectral database with high-resolution spectra and spectral trees to help identify compounds, including compounds not present in the library. It supports spectrum, structure, substructure, tree, m/z, and compound name searches, with file import for spectra and trees and an integrated editor for structure queries. Access to the new library requires login with Google or Facebook, and the full database requires use on a desktop or laptop browser.
Key features
- Search MSn spectra against library for structural hits
- Draw structure queries with integrated Structure Editor
- Find compounds containing a specific substructure or fragment
- Import spectral trees from raw files or Excel files
- Search by m/z value or molecular mass with tolerance setting
- Search IUPAC, trivial, commercial names and synonyms
Best for: Analysts and researchers working on compound identification in metabolomics, toxicology, and environmental sciences.
Good for
- Freely searchable collection of high-resolution spectra
- Can suggest matches when exact compound is not in library
- Supports spectrum, structure, substructure, tree, and m/z queries
Watch out for
- Requires Google or Facebook login to access new library
- Full database requires desktop or laptop browser
- New version supports Firefox and Chrome
mzCloud at a glance
- Website
- mzcloud.org
- Category
- Research & Data › Open Data & Datasets
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
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mzCloud FAQ
How do I access the new mzCloud library?
Log in with either Google or Facebook.
Can I search using my own spectrum?
Yes, a query spectrum can be imported from a file for spectrum search.
Can I search using a spectral tree?
Yes, spectral trees can be imported from raw files or from an Excel file.
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