Terms of Service

Last updated: January 28, 2026

Summary (Plain English)

CompoundLookup is a free educational tool. You can use it to learn about chemistry and explore compounds. The data comes from PubChem, so please credit them for any serious use. Don't use our service for anything illegal or harmful. That's pretty much it!

1. Acceptance of Terms

By accessing and using CompoundLookup ("the Service"), you accept and agree to be bound by these Terms of Service. If you do not agree to these terms, please do not use the Service.

2. Description of Service

• An interactive periodic table for element selection
• Search results showing compounds containing selected elements
• Compound information including molecular formulas, IUPAC names, and molecular weights
• Links to external resources (primarily PubChem) for additional details

3. Permitted Use

• Educational purposes: Learning about chemistry, studying compounds, completing assignments
• Research purposes: Preliminary research, exploration of compound possibilities
• Personal interest: Casual browsing and learning about chemistry
• Teaching: Demonstrating chemistry concepts in educational settings

4. Prohibited Use

• Illegal activities: Any use that violates local, state, national, or international law
• Harmful purposes: Research intended to cause harm to people, animals, or the environment
• Commercial redistribution: Selling or redistributing our database without permission
• Service disruption: Attempting to overload, hack, or disrupt the Service
• Automated scraping: Using bots or scripts to mass-download data

5. Data Attribution

All compound data displayed on CompoundLookup is sourced from PubChem, a service of the National Library of Medicine (NLM), National Institutes of Health (NIH). If you use data obtained through CompoundLookup in publications, presentations, or other works, you should cite PubChem as the original source:

Kim S, Chen J, Cheng T, et al. PubChem 2023 update. Nucleic Acids Res. 2023;51(D1):D1373-D1380. doi:10.1093/nar/gkac956

6. Disclaimer of Warranties

CompoundLookup is provided "as is" and "as available" without warranties of any kind, either express or implied. We do not warrant that:

• The Service will be uninterrupted or error-free
• The data is 100% accurate or complete (though we strive for accuracy)
• The Service will meet your specific requirements

For critical applications: Always verify compound information from primary sources (such as PubChem directly) before using it for research, manufacturing, or any application where accuracy is critical.

7. Limitation of Liability

To the fullest extent permitted by law, CompoundLookup and its creators shall not be liable for any indirect, incidental, special, consequential, or punitive damages, including but not limited to loss of profits, data, or other intangible losses, resulting from your use of the Service.

8. Intellectual Property

The CompoundLookup website design, code, and organization are our intellectual property. The compound data itself is sourced from PubChem and is in the public domain. You may not copy, modify, or distribute the CompoundLookup website or its code without permission. However, you're free to use the compound information you find for educational and research purposes, with appropriate attribution to PubChem.

9. Changes to Service

We reserve the right to modify, suspend, or discontinue the Service at any time without notice. We may also update the database, add features, or change functionality. We'll try to maintain the Service, but we make no guarantees about its long-term availability.

10. Changes to Terms

We may update these Terms of Service from time to time. Changes will be posted on this page with an updated "Last updated" date. Your continued use of the Service after changes constitutes acceptance of the new terms.

11. Governing Law

These Terms shall be governed by and construed in accordance with applicable laws, without regard to conflict of law principles. Any disputes arising from these Terms or your use of the Service shall be resolved through good-faith negotiation.

12. Contact

If you have questions about these Terms of Service, please contact us:

Email: [email protected]