Sketch
Research-grade structure editor (Ketcher 3.12). Clean, journal-ready structures, unambiguous and reusable as SMILES.
CovaSketch · Molecule Workbench
Sketch a molecule.
Validated answers right next to it.
CovaSketch pairs a research-grade chemical sketcher with the full CovaSyn analytics suite. Properties, spectra, retrosynthesis and stability are one right-click away. The molecule-first lab notebook on the deterministic tool layer behind the CovaSyn MCP server.
- Ketcher 3.12, journal-ready
- Deterministic, no hallucination
- GDPR · EU data residency
Try it right here
Draw a structure and instantly see formula, molecular weight and canonical SMILES, permanently free, no signup. This is the light preview: on the platform, the full CovaSketch additionally evaluates spectra, stability, impurities, toxicology and synthesis routes on the same molecule, as a first pass your experts can sign off. Try the full version for free with your own account, up to 100 analyses per week.
Example, or draw your own
Instant and free
- Molecular formula
- Reading structure
- Molecular weight
- Reading structure
- Canonical SMILES
- Reading structure
Deeper analysis
Want to go deeper? Sign up for free and test the full analytics suite yourself. Our workshops give you guided hands-on time.
Features
What CovaSketch does
Sketch, predict, search, reason: all on the same molecule, without switching tools.
Predict
pKa, NMR, LogP and ADMET on demand. Computed deterministically by the CovaSyn analytics suite, not hallucinated.
Search
Find trade names and patents for the structure you drew via PubChem, without leaving the context.
Reason
Claude with tool-use, inline. Ask about the structure and get traceable, defensible answers.
Workflow
From a sketch to an answer you can trust
01
Sketch
Draw the structure right in your browser. CovaSketch canonicalizes it to SMILES automatically: clean, unambiguous, ready to use.
02
Analyze
Properties, spectra, retrosynthesis and stability are one right-click away, computed by the full CovaSyn analytics suite.
03
Document
Every step lands in the notebook: journal-ready, reproducible, audit-ready. “The AI said so” becomes a traceable record.
Analytics
The analytics behind the right-click
One drawn structure, the full CovaSyn analytics suite. Every domain covered by a validated, deterministic lab-stack tool.
CovaPhysChem
Physicochemistry
pKa, LogP and physicochemical properties.
CovaSolv
Solubility & formulation
Solubility, miscibility, pH curves, antisolvent.
CovaChem
ADMET & safety
ADME, druglikeness, ICH M7, Tox21, structural alerts.
CovaSyn analytics
Spectra
Predict NMR, MS and IR for the structure you drew.
CovaStab
Stability
Arrhenius kinetics, shelf-life, OOS/OOT.
CovaDock
Docking & binding
Docking, binding poses, refinement.
Who it's for
Built for everyday lab work
A tool for everyone who works with structures, from the first idea to regulatory documentation.
Medicinal chemistry & drug discovery
Draw candidates, assess ADMET and druglikeness early, plan retrosynthesis.
Formulation & process
Keep solubility, stability, shelf-life and physicochemical properties in view.
Analytics & regulatory
Predict spectra, verify identity and purity, document ICH M7 risks defensibly.
Why CovaSketch
Not another drawing tool. A defensible workspace.
Deterministic
Same structure, same result. No hallucination.
Reproducible & audit-ready
Every step version-pinned and defensible, ICH-aligned.
One workspace
Sketch, compute, search and document without tool-switching.
EU hosting & GxP-ready
GDPR-aligned, built for regulated environments.
FAQ
Frequently asked questions
- What is CovaSketch?
- A molecule-first lab notebook: sketch a structure, analyze it with the CovaSyn analytics suite and document it reproducibly, on the deterministic tool layer behind the CovaSyn MCP server.
- Do I need an account?
- Not for the preview above. The full analytics run inside your account: create one for free, no credit card. If you already have access, just log in.
- Which editor does CovaSketch use?
- The research-grade Ketcher 3.12 editor with journal-ready output. Structures are unambiguous and reusable as SMILES.
- Are the results reliable?
- Yes. Every value is computed deterministically (same input, same result), not hallucinated by an LLM. Each step is reproducible and audit-ready.
- What can I analyze?
- pKa, LogP, NMR, ADMET, ICH M7, stability, retrosynthesis, docking and more. All via the CovaSyn lab stack, one right-click away.
- Where does my data run?
- On the CovaSyn platform: GDPR-aligned, EU data residency and GxP-ready for regulated environments.
Get started
Draw your first structure.
CovaSketch runs on the CovaSyn platform. Sign up for free and start right away, up to 100 analyses per week. No credit card.
No sales call in between: account in two minutes, no credit card.