Generate DUD•E Decoys

To generate decoys for your active compounds, use our free on-line system below. Here is how:

  1. Paste a list of SMILES in the window below or choose a text files to upload. In each case, the format is one SMILES per line, optionally followed by white space and an identifer.
  2. Provide your email address to which the results should be sent. We do not retain this information. If you are logged in to, this will be filled in for you.
  3. Anonymous users must complete a CAPTCHA.
  4. Click Generate Decoys.

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Input SMILES by pasting OR uploading a text file

As an example, the following lines are accepted formats:

Cn1cnc2c1c(=O)n(c(=O)n2C)C curious_black_liquid 
CCCc1c2c(c(=O)[nH]c(n2)c3cc(ccc3OCC)S(=O)(=O)N4CCN(CC4)C)n(n1)C            blue_pill
A list of 45 SMILES will take about 10 minutes on average, but can take up to a few hours depending on system load. We truncate the input at 50 SMILES. If you have more than 50 SMILES, we suggest either a) clustering for representatives or b) submitting several requests.