PubChem

Rarity: Rare

A topic known well beyond its field, found in many languages.

Rarity follows how well known the article is: its views on the French and English Wikipedia over a year, and the number of languages it exists in.

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Arts and letters

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What Wikipedia says

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).

Excerpt from the Wikipedia article “PubChem”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: PubChem (US Government), Public domain, via Wikimedia Commons.