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Hash Bond with Solid Line
Why Hash Bond with a Solid Line used by Open Babel? Sometimes, when a hash bond is located on a ring structure, Open Babel adds a solid line to the hash bond. Here is an example SDF/Mol file, Hash-with-Solid-Line.sdf, that has 4 stereo centers on a ring structure. Hash-with-Solid-Line FYICenter.com ...
2022-07-26, 1581🔥, 0💬

Introduction to Ketcher
Where to find FAQ (Frequently Asked Questions) on basic understanding of Ketcher, Chemical Structure Editor in JavaScript? Here is a list of tutorials to answer many frequently asked questions compiled by FYIcenter.com team on basic understanding of Ketcher, Chemical Structure Editor in JavaScript. ...
2023-11-02, 1580🔥, 0💬

Running Open Babel on CentOS
Where to find FAQ (Frequently Asked Questions) on running Open Babel on CentOS? Here is a list of tutorials to answer many frequently asked questions compiled by FYIcenter.com team on running Open Babel on CentOS. Open Babel Installation Options on CentOS "DNF/YUM search" - No Open Babel Binary Pack...
2020-10-20, 1564🔥, 0💬

Using Fastsearch Fingerprint Index
Where to find FAQ (Frequently Asked Questions) on Using Fastsearch Fingerprint Index with Open Babel? Here is a list of tutorials to answer many frequently asked questions compiled by FYIcenter.com team on Using Fastsearch Fingerprint Index with Open Babel. "babel ... -o fs" - Generate Fastsearch In...
2020-09-30, 1555🔥, 0💬

What Is Ketcher Indigo Interface
What is Ketcher Indigo interface? Ketcher Indigo interface is part of the Ketcher JavaScript API that allows you to use some Indigo Toolkit functionalities. To access Ketcher Indigo interface, you need to access the "ketcher" object as a property of the content "window" object of the "iframe" where ...
2023-11-13, 1551🔥, 0💬

openbabel.cheminfo.org/v1/convert - Web API
How to make a HTTP request to the Open Babel Web API at openbabel.cheminfo.org/v1/conv ert?You can call the Open Babel Web API at https://openbabel.cheminfo.org /v1/convertwith a HTTP POST request as shown below. 1. Use "curl" command to call the Web API to generate a 3D SDF file from a given SMILES...
2023-01-24, 1549🔥, 0💬

"babel ... -o svg -xd -xP300" Bug - Option -d takes a parameter
Why "babel ... -o svg -xd -xP300" command is giving the "Option -d takes a parameter" error in Open Babel 2.4? It seems to be another code bug in the "babel" command in Open Babel 2.4 release. "-xd" option for "svg" output format should not require any parameters according the help document: "d - do...
2020-07-15, 1541🔥, 0💬

Adding Text Labels in Ketcher File
How to add text labels in a Ketcher file? You can insert a "text" object structure into the "nodes" array to add a text label in a Ketcher file as shown below: { "type": "text", "data": { "content": &lt;text-definition&gt ;,"position": &lt;location-object&gt ;,"pos": &lt;bounding...
2024-02-28, 1526🔥, 0💬

Refresh Molecule in JSME Editor
How to refresh (read and reset) molecule created in JSME editor with the Web server? If you want refresh molecule properties displayed in the JSME editor, you can use a PHP script on the Web server to read and reset the molecule structure in the JSME editor. 1. Create an HTML form with an input fiel...
2023-04-13, 1507🔥, 0💬

editor.structSelected() - Get Selected Sub-Structure
How to get the selected sub-structure currently in the Ketcher editor with the editor.structSelected() method? If you want to get detailed information about the selected sub-structure currently in the Ketcher editor, you can use the editor.structSelected() method on the Ketcher Editor interface. Her...
2023-11-23, 1467🔥, 0💬

"babel -i fs ... -s ... -at n" - Top n Similarity Search
How to perform a top 10 similarity search using the fastsearch index file with the "babel" command? If you want to perform a top n similarity search using the fastsearch index file, you can use the following "babel" command syntax: babel -i fs index_file output_section -s query_molecule -at n -aa In...
2020-08-25, 1444🔥, 0💬

Export Ketcher File from Editor
How to export structure from Ketcher editor in Ketcher file format? The best way to learn the Ketcher file format is to export different types of chemical structures for the Ketcher editor in Ketcher file format as described below: 1. Open Ketcher editor as shown in previous tutorials. 2. Select the...
2024-03-23, 1426🔥, 0💬

Ketcher File Structure for Molecule
What is the Ketcher file structure for a molecule structure? To represent a single molecule in a Ketcher file, you need to include a referenced-object in the "nodes" array as shown below: { "root": { "nodes": [ { "$ref": "mol&lt;seq&gt;" } ] }, "mol&lt;seq&gt;": { "type": "molecule",...
2024-03-07, 1425🔥, 0💬

Restore Structure from Server to Ketcher
How to restore a chemical structure from the Web server to the Ketcher editor? If you want to build a chemical structure editor with the capability to save the structure on the Web server and restore it later to the Ketcher, you should follow steps described below: 1. Using JavaScript to export the ...
2023-10-11, 1419🔥, 0💬

Install JSME 2017-02-26 Version
How to download and install JSME? If you want to try JSME on your own computer, you can follow this tutorial to download and install it. 1. Go to JSME Website at https://www.peter-ertl.com/jsm e/. 2. Click "Download the JSME 2017-02-26" to start downloading. 3. Save the download file as "JSME_2017-0...
2023-01-18, 1403🔥, 0💬

Ketcher File Structure for Reaction
What is the Ketcher file structure for a chemical reaction? The Ketcher file structure for a chemical reaction is an extension of the Ketcher file structure for a molecule. Additional molecule objects are added as reactants, reagents, solvents, and products of the reaction. A long arrow is also adde...
2024-02-18, 1368🔥, 0💬

Call getSmiles() and getSmarts() Parallelly
Why do getSmiles() and getSmarts() methods return the same result, if they are called in 2 parallel promises? There seems to be a bug in Ketcher v2.11.0 release. If you call getSmiles() and getSmarts() methods one after the other, you are creating 2 promises The first promise seems to be overriding ...
2024-01-24, 1359🔥, 0💬

editor.struct() - Get Entire Structure
How to get the entire structure currently in the Ketcher editor with the editor.struct() method? If you want to get detailed information about the entire structure currently in the Ketcher editor, you can call the editor.struct() method on the Ketcher Editor interface. Here is an HTML document that ...
2023-12-08, 1356🔥, 0💬

Ketcher File Format for Chemical Structures
Where to find FAQ (Frequently Asked Questions) on Ketcher File Format for Chemical Structures? Here is a list of tutorials to answer many frequently asked questions compiled by FYIcenter.com team on Ketcher File Format for Chemical Structures. What Is Ketcher File Format Ketcher File Structure Expor...
2024-02-11, 1336🔥, 0💬

What Is Ketcher File Format
What is Ketcher File Format? A Ketcher file is a JSON document that stores the entire content created in the Ketcher editor. It supports the following features: Supports molecule 3-D structures. Supports chemical reactions. Supports styled text labels. Supports S-Groups. Here is a simple example of ...
2024-02-11, 1332🔥, 0💬

Call getSmiles() and getSmarts() Chained
How to call getSmiles() and getSmarts() methods in 2 promises one chained to the other? Another way to avoid the bug mentioned in the previous tutorial is to call ketcher.getSmiles() and ketcher.getSmarts() methods in 2 chained promises. Chained promises use fulfilled and rejected handlers of the pr...
2024-01-15, 1324🔥, 0💬

Molecule with Substituted Functional Group
How to specify a S-Group (Substituted Functional Group) in a molecule structure in Ketcher file format? There are 2 options to specify a S-Group (Substituted Functional Group) in a molecule structure: 1. Specify S-Group without Group Substructure: Just replace the atom symbol at the s-group attachin...
2024-02-28, 1307🔥, 0💬

indigo.calculate() - Calculates Chemical Properties
How to calculate chemical properties of a given structure with the indigo.calculate() method? If you want to calculate chemical properties like mass and weight of a given chemical structure you can use the indigo.calculate() method on the Ketcher Indigo interface. Here is an HTML document that shows...
2023-11-09, 1300🔥, 0💬

"DNF/YUM install" - Open Babel Binary Packages
How to install Open Babel binary packages with DNF/YUM commands on CentOS systems? If you are running CentOS 8, you can follow this tutorial to install Open Babel binary packages: 1. Install "openbabel" package: fyicenter$ sudo sdf install openbabel Installed: openbabel-3.1.1-14.el8.x86_64 openbabel...
2023-01-24, 1294🔥, 0💬

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