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Use Ketcher as JS Library Without UI
How to Ketcher as a JavaScript library without the editor UI? Since Ketcher offers so many API functions, we can just use it as a JavaScript library without its editor UI. Here is an HTML document that shows you how to hide the Ketcher editor UI and use it as JavaScript library: &lt;html&gt;...
2023-10-27, 613🔥, 0💬

Show InChI String on Ketcher
How to display the InChI string of the molecule in Ketcher editor? You can follow steps below to display the InChI string of the molecule in Ketcher editor. 1. Open Ketcher editor as shown in previous tutorial. 2. Select the "Benzene" button in the template toolbar at the bottom of the editor window...
2023-10-27, 412🔥, 0💬

indigo.convert() - Convert Structure Formats
How to convert file formats of a given structure with the indigo.convert() method? If you want to convert a chemical structure from one file format to another, you can use the indigo.convert() method on the Ketcher Indigo interface. The indigo.convert(input, opts) method takes two arguments: input -...
2023-10-12, 673🔥, 0💬

Save Structure from Ketcher to Server
How to save structures created in Ketcher editor to the Web server? If you want to save the chemical structure created in the Ketcher editor to the backend Web server, you need write JavaScript code to extract the molecule data and send it as an HTML form parameter to the server. 1. Create a new HTM...
2023-10-11, 588🔥, 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, 468🔥, 0💬

Ketcher JavaScript API
Where to find FAQ (Frequently Asked Questions) on Ketcher JavaScript API? Here is a list of tutorials to answer many frequently asked questions compiled by FYIcenter.com team on Ketcher JavaScript API. What Is Ketcher JavaScript API contentWindow.ketcher - Access "ketcher" Object ketcher.setMolecule...
2023-10-05, 1447🔥, 0💬

Build Ketcher Editor Web Page
How to build my own Ketcher editor Web Page? If you want to build your Web page and offer Ketcher as a Chemical Structure Editor in the middle of the page, you can follow this tutorial. 1. Follow the previous tutorial to install Ketcher on your Web server. 2. Create a new HTML document, editor.html,...
2023-10-05, 934🔥, 0💬

Wedge/Hash Bond Changed by Open Babel
Why some Wedge/Hash Bonds are Changed by Open Babel? Sometimes, you may have an Wedge/Hash bond in the input data to specify a stereo center. When you convert the input data with Open Babel, you will see that the stereo center is identified with a different Wedge/Hash bond. For example, the followin...
2023-08-17, 1011🔥, 0💬

Write Stereoinformation to Output
How stereoinformation is being written to output data by Open Babel? Stereoinformation is being written to output data based on stereo centers maintained by Open Babel according the following rules: 1. 3D Stereoinformation - By default, 3D coordinates are copied over from input data to output data w...
2023-08-17, 914🔥, 0💬

JSME Molecule Online Editor
How to create and edit a molecule structure with JSME molecule editor? To help you to create and edit a molecule structure, FYIcenter.com provides this JSME Molecule Online Editor tool. All you need to do is to click a menu icon and draw a molecule by adding one part at a time. When you are done, yo...
2023-07-21, 8695🔥, 1💬

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, 471🔥, 0💬

Failed to Load D4DF9EC9DD21B943E35F3D5696D5D2A1.cache.js
Why JSME editor is not showing after upgrade to the 2022-09-26 version? If you upgraded JSME to the 2022-09-26 version from an older version, the JSME editor may fail to show up in your browser. In the browser developer console, you will see that a required JSME JavaScript file, D4DF9EC9DD21B943E35F...
2023-04-13, 419🔥, 0💬

Open Babel Web Interface at cheminfo.org
Is there any Web interface available for Open Babel? I want to try it before installing it on my local computer. You can try Open Babel on the Web interface provided by cheminfo.org. 1. Go to http://www.cheminfo.org/Chemis try/Cheminformatics/FormatConv erter/index.html. You see the Web interface tha...
2023-01-24, 611🔥, 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, 603🔥, 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, 437🔥, 0💬

"-o svg -xd -d" Bug in Open Babel 3.1.1
Why "obabel ... -o svg -xd -d" is not able to remove hydrogens? It seems to be code bug in the "obabel" command in Open Babel 3.1.1 release. In Open Babel 3.1.1 release, options -xd and -d are not respected together for SVG output in the "obabel -i sdf -o svg -xC -xt -xP400 -xd -d" command. For exam...
2023-01-24, 376🔥, 0💬

JSME Tutorials
Where to find FAQ (Frequently Asked Questions) on JSME, Molecule Editor in JavaScript? I want to learn more about JSME. Here is a large collection of tutorials to answer many frequently asked questions compiled by FYIcenter.com team on JSME, Molecule Editor in JavaScript: Introduction to JSME What I...
2023-01-18, 4100🔥, 0💬

Examples Provided in JSME
Where to find more examples on using JSME? The JSME distribution package provides a number example on how to use JSME. If you open "./JSME_2022-09-26/index.html" in a Web browser, you see the following examples: JSME_minimal.html - minimalistic example how to incorporate JSME into a web page JSME_te...
2023-01-18, 497🔥, 0💬

JSApplet.Inchi.computeInchi() - Generate InChI
How to generate InChI and InChIKey with the JSApplet.Inchi.computeInchi() method? The latest version of JSME allows you to generate InChI and InChIKey from a given molecule in SDF format. Here are the steps you can follow to do this in JavaScript code: 1. Create an empty object called "JSApplet" and...
2023-01-18, 449🔥, 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, 441🔥, 0💬

What Is Tanimoto coefficient
What Is Tanimoto coefficient? Tanimoto coefficient is a metric (or score) to measure the similarity of two sets of elements. Tanimoto coefficient can be simply defined as the ratio of the intersection of the two sets over the union of the two sets. More precisely, the Tanimoto coefficient of set A a...
2022-12-15, 25563🔥, 2💬

💬 2022-12-15 Nio: Thank you for your detailed and clear explanation. It is very helpful and understandable.

💬 2022-10-01 Simpson: Interesting...

Stereo Perception Performed by Open Babel
What is stereo perception performed by Open Babel? Stereo perception performed by Open Babel is the process of constructing stereo centers with stereoinformation received from input data. Stereo perception is performed in the following order of precedence: 1. Constructing stereo centers with 3D ster...
2022-11-16, 932🔥, 0💬

Read Stereoinformation from Input
How stereoinformation is being read from input data by Open Babel? Most molecule data files store stereoinformation in 3 ways: 0D, 2D, and 3D. 0D: Stereoinformation in 0 dimension is defined by parity (or chirality) at atom level. 2D: Stereoinformation in 2 dimension is defined by bond style as wedg...
2022-11-16, 896🔥, 0💬

What Is Stereochemistry
What Is Stereochemistry? Stereochemistry is the study of stereoisomers, which are molecules having same atoms and same connectivities, but with different spatial arrangements. Here are some stereoisomers listed in the picture below: Example of Stereoisomers You can do stereochemistry with Open Babel...
2022-11-09, 1384🔥, 0💬

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