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These databases have been provided to us under collaborative agreements with each respective vendor. Molecules in the original catalogs may not appear in ZINC because they do not pass our filters, or they have not been processed yet. ZINC may be used free of charge for research by individuals and institutions. Whereas you are free to share the results of a ZINC search or a screen of molecules from ZINC, you may not redistribute major portions of ZINC without the express written permission of John Irwin. Additional usage notes may be found below the table.
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Vendor
Information

Name
Email
Phone
Fax

Catalog
Information

Source- entries,
Version/ Date

ZINC
Information

Loaded,
Filtered,
Sole- source,
Depleted

Diversity
Information

Cluster represent-
atives
at a given Tanimoto cutoff

ASDI
rhammar at asdi.net 
p.+1 302 266 6891
f.+1 302 266 8296
105600
2008.1
122587 download
5935
15948
NYA
90%:42553
80%:22839
70%:11514
60%:5050
Asinex
busdev at asinex.com 
p.+7 495 780 3417
f.+7 095 780 3419
389844
2009.5
600230 download
17456
5898
NYA
90%:N/A
80%:52924
70%:19576
60%:5892
AsisChem
sales at asischem.com 
p.+1 866 609 8657
f.+1 617 837 2114
159987
2009.5
178597 download
11485
19168
NYA
90%:42338
80%:13017
70%:4727
60%:1756
ChemBridge
support at chembridge.com 
p.858 451 7400
f.858 451 7401
804583
2009.4
1224316 download
15827
66231
NYA
90%:N/A
80%:70578
70%:29543
60%:8460
ChemDiv
chemdiv at chemdiv.com 
p.858-794-4860
f.858-794-4931
791162
2009.5
1057042 download
20509
98316
NYA
90%:165185
80%:57500
70%:21179
60%:7311
Chemical Block
orders at chemical-block.com 
p.+7 095 1356343
f.+7 095 1372966
124169
2006.3
191305 download
8337
12495
NYA
90%:65023
80%:33395
70%:15583
60%:6086
CombiUgi
none 
p.use email
f.use email
117450
2009.11
106087 download

106074
NYA
90%:556
80%:87
70%:19
60%:6
Enamine
enamine@enamine.net 
p.+380 44 537 3218
f.+380 44 537 3253
1391150
2009.2
download 1691164
29587
147004
NYA
90%:N/A
80%:N/A
70%:N/A
60%:N/A
IBScreen
screen at ibscreen.chg.ru 
p.+7 (095) 788 0651
f.+7 (095) 788 0652
447550
2009.5
699347 download
20177
7327
NYA
90%:N/A
80%:N/A
70%:N/A
60%:N/A
Innovapharm
reag at nbi.com.ua 
p.+38 044 5599572
f.+38 044 4927309
298046
2010.4
435152 download

504
NYA
90%:66162
80%:24283
70%:9565
60%:3442
Labotest
sales at labotest.com 
p.use email
f.use email
106756
2008.9
140422 download
9143
46512
NYA
90%:60820
80%:29581
70%:13103
60%:5190
Life Chemicals
sales@lifechemicals.com 
p.+1 905 634 5212
f.+1 905 634 4719
316539
2009.5
download 424836
8249
15123
NYA
90%:N/A
80%:N/A
70%:N/A
60%:N/A
National Cancer Institute
dtpinfo at mail.nih.gov 
p.no phone
f.no fax
237771
Nov 2003
316181 download
31405
64933
NYA
90%:104678
80%:51369
70%:22899
60%:9218
NCI Plated 2007
dtpinfo at mail.nih.gov 
p.no phone
f.no fax
139735
May 07
87374 download
21235
59580
NYA
90%:55685
80%:29960
70%:14526
60%:6400
Otava
info at otavachemicals.com 
p.(+380 44) 2522389
f.(+380 44) 2522458
155815
2009.5
224410 download
4600
937
NYA
90%:1
80%:1
70%:1
60%:1
Pharmeks
sales at pharmeks.com 
p.+7 (095) 702-9648
f.+7 (095) 702-9648
228464
2006.5
418974 download
23075
24758
NYA
90%:79253
80%:34254
70%:15318
60%:6045
Princeton BioMolecular Research
info at princetonbio.com 
p.+1 732 355 9920 x102
f.+1 732 355 9921
770017
2009.4
1055770 download
54683
50785
NYA
90%:N/A
80%:N/A
70%:22554
60%:7079
Ryan Scientific
sales at ryansci.com 
p.843 884 4911
f.843 884 5568
185372
2006.5
120266 download
6527
200
NYA
90%:66202
80%:35716
70%:15538
60%:5103
Specs
info at specs.net 
p.+31 15 251 8111
f.+31 15 251 8181
201426
2009.4
321374 download
15902
28345
NYA
90%:100696
80%:43226
70%:18675
60%:7211
TimTec
info at timtec.net 
p.(302) 292-8500
f.(302) 292-8520
700735
2009.5
982509 download
43267
50590
NYA
90%:N/A
80%:N/A
70%:24626
60%:7689
UORSY
sales at ukrorgsynth.com 
p.+38 044 531 94 97
f.+38 044 531 94 97
1054384
2009.1
1530090 download
11062
217731
NYA
90%:N/A
80%:84222
70%:20507
60%:4833
Vitas-M
boerrigter at vitasmlab.com 
p.+31 (0) 55 50 500 33
f.+31 (0) 55 50 500 34
846859
2009.4
1247567 download
29914
7150
NYA
90%:245627
80%:78240
70%:25373
60%:7902
The following limits are in effect:
  • Molecules per mol2 or SDF format file: 100,000
  • Entries per flexibase file 20,000
  • Typical size of mol2/sdf/flexibase files: 20 to 100 MB
  • Number of large files that may be downloaded concurrently: 2
In the downloads above, we offer four formats: SMILES, mol2, SDF, and flexibase formats. Most docking programs we know of use mol2. We urge you to not download Flexibaseunless you are using DOCK3.5.54.

We have generated protonated forms in 3 pH ranges. The reference structure ("ref") is a single representative structure at pH 7. The middle pH range ("mid") contains additional protonated forms obtained by titrating protons with pKa between 5.75 and 8.25. The low pH range ("lo") contains additional protonated forms between pH 4.5-7 and the high pH range ("hi") contains additional protonation forms between pH 7-9.5.

Databases are divided into chunks for easier download. mol2 and sdf slices are 100MB or less uncompressed. Flexibase are 160MB or less uncompressed.

To download all files in the usual pH range (5.75-8.25) use "Usual". To download databases for metalloenzymes use "Metal", which adds the pH range 7-9.5 to usual above. For the entire pH range 4.5-9.5 please use "All".

We also offer tables of Molecular Properties, purchasing information, and Inchi files.

A product of BCIRC, the Bioinfomatics and Chemical Informatics Research Center @ UCSF. Last updated Aug 6, 2009. questions and discussion to zinc-fans at docking.org; bug reports to support at docking.org; any other correspondence to comments at docking.org. Terms of use. Privacy policy.