Did you ever wonder how many molecules were added to ZINC today?

Dear ZINC Fans

We all know ZINC keeps growing. It now contains 218 M purchasable molecules.

And if you ask me, I'll tell you that we add tens of thousands of molecules to ZINC every day, certainly averaged over a year.

Did you ever wonder how many molecules were added today? Now you can easily find out. For instance, suppose you are interested just in "in stock" molecules, whether available directly from vendors or via procurement agents, such as MolPort or eMolecules. For May 31st, the answer is:


If you want everything you can buy, then use:


Please note that we use GMT times, so although it is still only 8:30pm in San Francisco, we've already added 10s of thousands of molecules tomorrow, UTC.