We are retiring the old versions of ZINC.
Versions 7, 6 and 5 are now all over two years old. Given the huge turnover in the chemical marketplace, we can think of no reason why anyone would want access to such old versions of the database.
Still, if you do need access to old versions of ZINC, please write us and we will do our best to help you.
New ZINC subsets appeared today, Wed Jul 8, 2009:
#33 - goldilocks - not too this, not too that. just right. Try this set if you are getting too many "extreme" molecules that you do not like (although, getting extreme molecules may point to an underlying problem with your docking model)
#26 - all-now - chemical space in under two weeks.
#37 - sarah - back by popular demand. purchasable compounds under 250 Daltons. that's it. suitable for the model system sites
Happy Canada Day to everyone!
We have some new subsets that appeared on the ZINC website today (Jul 1, 2009).
1. "leads now", subset 21. 2.18M compounds (was 1.96M)
2. "drugs now", subset 23. 6.28M compounds (was 5.67M)
3. "clean CNS permeable", subset 39. This is a new subset, and has 344K cmpds.
As always, we welcome your feedback about ZINC. Please don't hold back. Your comments help us fix problems that we either have not noticed or have let slide.
For people having outstanding issues to which I have not yet responded:
a) thanks for your patience
During May we have updated the following vendor catalogs in ZINC:
Aurora, BioBlocks, ChemDiv, ChemBridge, Enamine, Florida Heterocycles, IS-Pharm, KeyOrganics, Otava, Princeton, Shanghai Sinofluoro, TimTec, Vitas-M.
Hundreds of thousands of new compounds, and at least tens of thousands of depletions.
We have just exported fresh copies of all the "fragment" subsets. Coming up: "leads" subsets.
The "clean fragments" subset of ZINC, #12, was released today. It has 178K purchasable compounds, up from 126K in January 2009. "clean" ZINC subsets have stricter filtering rules applied to remove molecules that might not even be a problem. They are ideal for people who are willing to sacrifice a little chemical space coverage in return for a lower artifact rate.
A new version of the fragment-like subset was released today, Wednesday May 20 2009. It has 444K commercially available molecules, up from 319K in the previous version from January 2009.
The fragments-now subset (#22) has 423K, i.e. most fragments in ZINC are available from vendor stock and are not make to order.
"fragments" and "leads" are the two subsets of ZINC that we ourselves use most often.
The "all purchasable" subset of ZINC is ready for download. It contains over 13M compounds you can simply purchase, in ready-to-dock formats.
Dear DOCK Blaster users
Until I get it fixed, you are strongly urged to dock either "clean-leads" or "clean-fragments" (subsets 11 and 12 respectively).
For 95% of you, you probably want to only dock either subset 11 or 12.
If you downloaded any of the following subsets in the last two weeks, you may have downloaded two copies of each molecule due to a mistake that we fixed today.
The affected subsets are: bioblocks, chembridge BB, princeton BB, florida, otava, otava BB, otava on demand, timtec, ibs, asischem.
The dates are: around Apr 25 - May 6
The impact is: you might have two copies of each molecule.
The remedy is: download a fresh copy.
The worst that can happen is: you see the same molecule twice in your docking calculations.
The severity of this problem is: low