RECOGNIZE
A picture becomes
possibility.
Rasayan OCSR turns a chemical image into a structure you can review, edit and investigate. Recognition runs on your computer.
Chemistry.
In your hands.
From the first bond to the final report.
A scientific desktop built around the way you think.
A SCIENTIFIC WORLD. ONE WORKSPACE.
Start with nothing.
See what becomes possible.
From a blank canvas to molecular shape and spectral insight.
Everything begins with your chemistry.
FOLLOW THE CHEMISTRY
One idea. Every perspective.
A picture becomes
EXPLORE
Same molecule.
New dimensions.
Generate conformers. Align molecular shapes. Compare geometry and relative energies, then explore protonation, tautomers and pKₐ.
INTERPRET
Signals meet
structure.
Predict ¹H and ¹³C NMR. Work with measured spectra and inspect assignments beside the chemistry that gives them meaning.
CONNECT
Think in steps.
Work in routes.
Connect reaction stages, material requirements and yields in Norm Sheets. Take structured calculations into Excel and editable chemistry into Office.
START WITH THE IMAGE. UNLOCK THE CHEMISTRY.
From a picture.
To your next discovery.
Meet Rasayan OCSR. Bring in a chemical image, recognize its structure on your computer, review the result and place editable chemistry on your canvas.
Bring the image.
Open a chemical image and select the structure you want to recognize.
Review the chemistry.
Compare the recognized structure with its source before placing it.
Keep going.
Edit the molecule, explore its properties or take it into a reaction.
MUCH MORE THAN A DRAWING
A structure is just
the beginning.
Draw a molecule. Explore its properties. Examine its spectra. Build the reaction. Calculate the quantities. Carry it all into your next paper.
One connected workspace for chemistry that moves from an idea to something you can use.
01 / CREATE
Room for your
most complex ideas.
Structures, reactions, peptides and the details that make them yours. Work across tabs, refine your layout and keep the chemistry editable.
Every bond matters.
Stereochemistry, charges, reaction arrows, atom mapping, abbreviations and templates.
Start your way.
Draw by hand, work from a chemical name, paste a structure or recognize a chemical image.
Keep the freedom to edit.
Multiple drawings, undo and redo, local saves and familiar scientific file formats.
Look beyond the structure.
ELEMENTS. A NEW PERSPECTIVE.
The periodic table.
In another dimension.
Move between a familiar table and an interactive 3D spiral. Explore periods and element families, inspect atomic information, then choose an element for your drawing.
A scientific reference built into your workspace.
03 / CALCULATE
From one reaction.
To the whole route.
Your stoichiometry belongs with your chemistry. Build a table for a single reaction, then take a multistage synthesis into the Norm Sheet workspace.
Change the scale.
Keep the relationships.
Work with a limiting reagent, quantities, units, equivalents and yield. Keep a single-stage stoichiometry table alongside the reaction on your canvas.
For multistage work, use Norm Sheets to connect stages, review material requirements and export your calculations.
Reaction→Materials→Quantities & yield→Norm Sheet→Excel
04 / COMMUNICATE
Your chemistry.
Where your work happens.
Draw
Microsoft WordPapers & reports
Microsoft ExcelTables & compound data
Microsoft PowerPointPresentations & discussionsKeep the structure.
Not just the picture.
Bring editable chemical drawings into Word, Excel and PowerPoint. Open embedded chemistry in Draw, make your changes and save them back into the document.
Editable Office objects require the supported desktop Office applications and Rasayan Draw on Windows.
BRING YOUR SCIENCE WITH YOU
Files in.
Possibilities out.
Open chemical drawings, compound datasets and supported instrument data. Keep molecular structures and their associated properties together.
Explore supported formats ↘SDFMOLCDXMLJCAMP-DXSMILESBrukerRXNCSVmzML
SCIENTIFIC AI. RUNNING RIGHT HERE.
A laboratory of capabilities.
On your computer.
Image recognition, molecular prediction and chemical naming run locally. Move from a captured structure to the questions that matter, without uploading your chemistry for inference.
Image → structure
Turn chemical images into editable structures with Rasayan OCSR.
Structure ⇄ name
Generate chemical names from structures, or start a drawing from a chemical name.
Proton & carbon NMR
Explore predicted ¹H and ¹³C spectra alongside the molecule.
pKₐ & protonation
Predict pKₐ locally and explore protonation states across pH.
Tautomers
Generate and rank alternative tautomeric forms for further investigation.
Conformers & geometry
Explore conformations, compare structures and refine molecular geometry.
Forward synthesis
Investigate predicted products and bring the chemistry back to your canvas.
Mass spectra
Explore predicted MS/MS fragmentation and mass-spectral evidence.
AI predictions support scientific interpretation and require review. Account-based licence synchronization is separate from local scientific computation.
THE POWER STAYS WITH YOU
Big ideas.
Offline by Design.
Your drawing and scientific computations run on your computer. Keep working without sending your molecular work to a cloud service.
Local scientific computationLocal drawing filesOffline activation available
Account-based activation can connect to Rasayan for licence synchronization. Scientific workflows remain local.
MADE FOR THE DETAILS
A closer look.
Drawing & chemical file formats +
Work with MOL V2000/V3000, SDF, RXN, RDF, SMILES, InChI, KET, CDX and CDXML. Import and export support varies by format and content.
Structures, reaction schemes, atom mapping, stereochemistry, labels, abbreviations, templates and macromolecular workflows are part of the drawing workspace.
Spectra & instrument data +
Import supported Bruker and Agilent/Varian NMR datasets, JCAMP-DX, CSV and supported mass-spectrometry formats including mzML and mzXML.
Explore NMR processing and assignments, IR processing and reference comparisons, and mass-spectral analysis. Instrument-format support depends on the dataset and experiment.
Compound libraries & Excel +
Open multi-record SDF datasets in a compound table, keeping structures with their original properties. Search, filter, select records and export structured workbooks.
Images in workbook cells and editable embedded chemical objects serve different workflows. Use the appropriate export for the document you need.
Stoichiometry & Norm Sheets +
Set material roles, limiting reagents, quantities, units and equivalents for a reaction. Calculate yield, scale quantities and retain a single-stage table on the canvas.
Use the Norm Sheet modal for connected stages, material requirements and route calculations. Review results and export to supported spreadsheet and report formats.
Installation & activation +
Download Rasayan Draw for Windows. Find release details, system requirements and installation guidance on the download page.
A valid licence is required. File-based offline activation and Rasayan account activation are available. Contact Rasayan for access or help choosing your activation method.
This release is unsigned; Windows may warn or block installation. Do not disable Windows security settings. Contact support if installation is blocked.
MEET YOUR NEW SCIENTIFIC DESKTOP
Make room
for discovery.
Rasayan Draw for Windows.