PubChem

Listed · not verified by owner Last verified 5 October 2026

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PubChem

NCBI, U.S. National Library of Medicine United States source

Free NCBI chemical database searchable by name, molecular formula, structure and other identifiers; also publishes a GHS hazard and precautionary code summary. source

Covers: not stated by the vendor
Languages: not stated
Pricing: Free public resource source
Delivered as: Web resourcesource
Also: APIsource

Prices, features and terms

Prices

What it does, according to the vendor

GHS Classification (Rev.11, 2025) summary: pictograms, H- and P-statementssource
GHS pictogram images (GHS01-GHS09) available as GIF filessource
PUG-REST web service for programmatic data accesssource
PUG-View REST service returns full compound reportssource
Also offers PUG-SOAP, PubChemRDF REST and E-Utilities accesssource

Integrations: REST API (PUG-REST, PUG-View) · SOAP API (PUG-SOAP)source
Platforms: websource

What the vendor says it is responsible for

Compliance and accuracy

“…the U.S. Government does not warrant or assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed.”

source from the legal notice

Quoted only from the vendor’s own legal documents — terms, licence, legal notice or a published policy — never from its blog, help pages or marketing.

This page lists facts published by the vendor, each linked to the page we read it on. We have not used the product and do not rate it. In Chemical safety databases, verified listings come first, most recently confirmed at the top, then listed ones alphabetically; that order is not for sale.

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Claiming is free. The owner confirms or corrects the facts; the card then shows “Verified by owner” with the date, a logo and a short description in the vendor’s own words, and comes first in its section — verified listings are ordered by the date the owner last confirmed the facts, which can be renewed once a quarter. Corrections from anyone are welcome — please say where the right fact can be checked.