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* Anonymous users can search for one molecule at a time in the batch interface, while logged in users may search for up to 10 molecules in a single transaction. | * Anonymous users can search for one molecule at a time in the batch interface, while logged in users may search for up to 10 molecules in a single transaction. | ||
* You must complete a captcha each time you open a new window to protect us from bots. | * You must complete a captcha each time you open a new window to protect us from bots. | ||
* We throttle usage in various ways that allow us to offer a free public service without overloading. | * We throttle usage in various ways that allow us to offer a free public service without overloading. | ||
== Questions I can ask == | == Questions I can ask == | ||
[[ZINC26:Questions]] | [[ZINC26:Questions]] | ||
== Updates / Status == | == Updates / Status == | ||
Latest revision as of 19:53, 25 September 2026
ZINC26 is a search tool for purchasable and precedented bioactive chemical space. It uses Smallworld and Arthor technology from NextMove Software to allow billions of molecules to be searched in seconds. There are three ways to use ZINC26: Interactive, Batch, and an API.
How to use the Interface
Batch interface
ZINC26 batch allows you to search all purchasable molecules to find the most similar in a short transaction. The resulting zip file can be downloaded and opened with DataWarrior (openmolecules.org, free). A guide on using DataWarrior to navigate the results is available ZINC26:DataWarrior.
Interactive interface
ZINC26 has many catalogs of both purchasable and bioactive compounds, which allow many interesting questions to be answered almost instantly. The interactive interface searches specific databases subsets you select, from a few to a few billion molecules each.
Current Contents and Status of Databases
- ZINC26:Databases
- ZINC26:Purchasable Databases
- ZINC26:Bioactive Databases
- ZINC26:Special Databases
- ZINC26:Progress
More notes
- Anonymous users can search for one molecule at a time in the batch interface, while logged in users may search for up to 10 molecules in a single transaction.
- You must complete a captcha each time you open a new window to protect us from bots.
- We throttle usage in various ways that allow us to offer a free public service without overloading.
Questions I can ask
Updates / Status
- writing paper
- checking everything
- testing
- we need to create/update the "All-" databases
Report Problems / Suggestions
- Use our usual form for reporting problems: https://forms.gle/LZV1FCmLWxUWznVi9
- Send us catalogs that you do not see indexed.
Additional access with login
If you login, you get extra access. This includes:
- being able to search 10 SMILES at a time in batch instead of 1.
- access to Arthor
- access to Synthons
Work in progress
We are still assembling various "all-" type databases. They will appear soon, and will provide the ability to search all molecules to some heavy atom count in a single interactive search.