Structure Checker History of Changes¶
May 4th, 2023: Structure Checker 23.7.0¶
Improvements¶
- Atom Query Property Checker was extended with an option to detect and remove Recursive SMARTS (SMARTS query)
- New Bond Topology Checker with Remove Bond Topology fixer has been added
Bugfixes¶
- Attached Data fixer did not remove Attached Data in case of multiple instances
April 5th, 2023: Structure Checker 23.5.0¶
No changes.
March 10th, 2023: Structure Checker 23.4.0¶
No changes.
February 23th, 2023: Structure Checker 23.3.0¶
No changes.
February 8th, 2023: Structure Checker 23.2.0¶
No changes.
January 25th, 2023: Structure Checker 23.1.0¶
Improvements¶
- Java 17 runtime compatibility is supported.
December 13th, 2022: Structure Checker 22.22.0¶
No changes.
December 1st, 2022: Structure Checker 22.21.0¶
No changes.
November 24th, 2022: Structure Checker 22.20.0¶
Improvements¶
- Works with Java 17 as well.
October 27th, 2022: Structure Checker 22.19.0¶
Bugfixes¶
- CVE-2022-42889 commons-text vulnerability has been fixed.
September 27th 2022: Structure Checker 22.18.0¶
No changes.
LTS Release - January 19th, 2023: Structure Checker 22.17.4 (Lithium.4)¶
No changes.
LTS Release - November 29th, 2022: Structure Checker 22.17.3 (Lithium.3)¶
No changes.
LTS Release - November 9th, 2022: Structure Checker 22.17.2 (Lithium.2)¶
Bugfixes¶
- CVE-2022-42889 commons-text vulnerability has been fixed.
LTS Release - October 19th, 2022: Structure Checker 22.17.1 (Lithium.1)¶
No changes.
December 22nd, 2021: Structure Checker 21.20.0¶
Improvement¶
- Partial Clean has been added to the Overlapping Atom Checker as a new fixer option
July 16th, 2021: Structure Checker 21.12.0¶
Improvement¶
- Attached Data Checker was extended to accept a list of Attached Data names (or regex) to be excluded from the checking process
May 22nd, 2020: Structure Checker 20.13.0¶
Improvement¶
- Valence error checker was extended to allow traditional pentavalent Nitrogen representation for azides.
LTS Release - March 30th, 2020: 20.9.0 Structure Checker (Fermium.1)¶
LTS Release - October 18th, 2019: 19.21.1 Structure Checker (Europium.1)¶
LTS Release - April 11th, 2019: 19.7.1 Structure Checker (Deuterium.1)¶
October 9th, 2018: Structure Checker 18.24.0¶
Bugfixes¶
LTS Release - September 25th, 2018: 18.22.1 Structure Checker (Carbon.1)¶
February 13th, 2018: Structure Checker 18.4.0¶
Bugfixes¶
August 1st, 2017: Structure Checker 17.18.0¶
Bugfixes¶
- Overlapping Atom Checker does not detect those atoms which are just too close but actually do not overlap.
October 3rd, 2016: Structure Checker 16.10.3¶
Bugfixes¶
September 26th, 2016: Structure Checker 16.9.26¶
Improvements¶
- A list of excluded atom labels can be specified for Pseudo Atom Checker.
November 9th, 2015: Structure Checker 15.11.9¶
Improvements, deprecations¶
- Wedge Error Checker was replaced by Incorrect Tetrahedral Stereo, Non-standard Wedge Scheme, and Non-stereo Wedge Bondcheckers.
August 24th, 2015: Structure Checker 15.8.24¶
Improvements¶
August 3rd, 2015: Structure Checker 15.8.3¶
API changes¶
chemaxon.checkers.runner.BasicCheckerRunner was removed from the public API. Use [AdvancedCheckerRunner](instant-jchem_advanced-structure-checker-button.md).
July 6th, 2015: Structure Checker 15.7.6¶
Bugfixes¶
Improvements¶
June 22th, 2015: Structure Checker 15.6.22¶
Bugfixes¶
April 13th, 2015: Structure Checker 15.4.13¶
New features¶
- New checker: Brackets Checker .
January 26th, 2015: Structure Checker 15.1.26¶
Bugfixes¶
- Wedge Error Checker didn't always agree with Wedge Clean Fixer . From now on the molecules fixed by Wedge Clean Fixer * are accepted as correct by * *Wedge Error Checker. *
January 12th, 2015: Structure Checker 15.1.12¶
Improvements¶
- Aromaticity error fixing improvements: Dearomatize and Rearomatize fixers can fix aromaticity errors in heteroaromatic rings (containing only carbons and nitrogens) in unambiguous cases.

Bugfixes¶
- Bond Angle Checker did not accept some bond angles as correct. Bonds connected to a ring were affected.
January 5th, 2015: Structure Checker 15.1.5¶
Bugfixes¶
November 17th, 2014: Structure Checker 14.11.17¶
Bugfixes¶
October 27th, 2014: Structure Checker 14.10.27¶
New features and Improvements¶
- New checker: R-group Bridge Error Checker.
- R-group Attachment Error Fixer improvements:
* removes superfluous attachment points,
* can fix errors in R-group definitions having multiple equivalent candidates for the addition or removal of the attachment point(s),
* can fix structures containing contracted abbreviated groups,
October 6th, 2014: Structure Checker 14.10.6¶
Bugfixes¶
- Circular R-group Reference Checker failed to identify some circular references
July 21th, 2014: Structure Checker 14.7.21¶
New features and Improvements¶
- OCR Error Checker was improved, now it identifies optical structure recognition errors better
- "Discard OCR errors" option was removed from Structure Checker application and
structurecheckercommand line application. Use OCR Error Checker.
Bugfixes¶
- Overlapping Bond Checker detected some non-overlapping bonds as overlapping [error report]
July 7th, 2014: Structure Checker 14.7.7¶
New features and Improvements¶
- Less invasive fix of bond length errors and bond angle errors with newly introduced Bond Length Fixer and Bond Angle Fixer .
Please visit this page for History of changes relating older Marvin versions.