安裝中文字典英文字典辭典工具!
安裝中文字典英文字典辭典工具!
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- PubChem
Getting Started with Submissions Data Submission Policy Chemical Vendor Policy https: pubchem ncbi nlm nih gov source 29731 https: pubchem ncbi nlm nih gov source 28569 https: pubchem ncbi nlm nih gov docs pug-rest-tutorial#section=By-Cell-Line-Identifier https: pubchem ncbi nlm nih gov docs data-source-page-updates-2026
- PubChem - Wikipedia
PubChem is a database of chemical molecules and their activities against biological assays The system is maintained by the National Center for Biotechnology Information (NCBI), a component of the National Library of Medicine, which is part of the United States National Institutes of Health (NIH)
- PubChem - Database Commons
Database Database Profile PubChem General information Classification Tag Contact information
- About - PubChem
PubChem is an open chemistry database at the National Institutes of Health (NIH) “Open” means that you can put your scientific data in PubChem and that others may use it
- Structure Search - PubChem
PubChem Structure Search allows the PubChem Compound Database to be queried by chemical structure or chemical structure pattern
- Quick Search - PubChem
The search box on the PubChem home page and in the top navigation bar (on sufficiently large screens) provides a unified Quick Search across major PubChem data collections
- Periodic Table of Elements - PubChem
Interactive periodic table with up-to-date element property data collected from authoritative sources Look up chemical element names, symbols, atomic masses and other properties, visualize trends, or even test your elements knowledge by playing a periodic table game!
- Compounds - PubChem
PubChem Compound records are derived summaries that give users access to a rich set of related content Compound records contain unique chemical structures extracted from contributed Substance records through standardization
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