the reasoning layer databases don't give you

Draw the reaction.Get the whole decision.

Reaxys and SciFinder hand you a conditions list. ChemForge reasons like a chemist: the mechanism, why a route fails, out-of-box methods most chemists miss, the simplest path to pure product — and honest data with no invented citations. Free.

  • Mechanism + failure analysis
  • Out-of-box conditions
  • Isolation & workup gate
  • Procedure + stoichiometry
  • No-bluff references
Launch the workbench→See how it works

How it works

From a sketch to a decision, grounded at every step

01

Draw or look up

Sketch a full reaction with the arrow tool, or paste a SMILES / name / CAS. A real structure editor — rings, charges, stereo, R-groups.

02

Ground in real data

Molecular facts are computed, not recalled. Safety, sourcing, and DOI-verified literature come from live authoritative sources. No invented citations.

03

Decide at the bench

Ranked conditions, mechanism, a step-by-step procedure, stoichiometry, reagent sourcing, and the expected analytical signature — in one pass.

Capabilities

Three ways to work — one grounded engine

Reaction

Conditions engine

Up to ten ranked condition sets for A + B → C, each tied to the mechanism and backed by real literature DOIs. Tried something that failed? It explains why, from the mechanism.

  • Mechanism + failure analysis
  • Procedure & stoichiometry
  • Reagent sourcing links
Structure Q&A

Troubleshoot & impurities

Ask about a single structure: low yield, side-products, or how an impurity forms — grounded in computed descriptors and established mechanism.

  • Yield troubleshooting
  • Impurity pathways
  • Confidence + caveats
Analytical

Read the report

Upload an LC-MS / NMR / HPLC report (PDF, TXT, CSV) or paste the raw values. The assignment is mapped against your structure — or inferred from the mechanism alone.

  • Upload or paste
  • Signal assignment
  • Purity & flag detection

Pricing

Start free. Upgrade when you need more.

Free

$0forever
  • 5 searches per day
  • Reaction analysis + conditions
  • Retrosynthesis routes
  • Safety, sourcing & prices
  • Patents & bioactivity

Resets every day.

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Pro

Coming soon
  • Higher daily limits
  • Priority reasoning
  • Saved projects & history
  • Everything in Free

Launching shortly.

Ultra Pro

Coming soon
  • Unlimited searches
  • Fastest reasoning
  • Bulk / batch analysis
  • Everything in Pro

For heavy bench use.

The workbench

Draw it. Ask it. Decide.

Sketch a structure or full reaction on the left; run the analysis on the right.

loading engine…
01

Structure / Reaction

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editor loads as you scroll here…

Draw a single structure for descriptors, or draw a full reaction with the reaction-arrow tool (reactant → product). Drawing an arrow unlocks Analyze reaction on the right.

no valid structure
02

Analyze

Enter a reaction as A + B > C. Add the conditions you already tried and the analysis explains why they under-performed.

no structure attached (optional)

You get: mechanism, up to 10 ranked conditions with real paper DOIs, a step-by-step procedure, stoichiometry, the full reagent list, vendor price links, SDS/SOP/environmental notes, and the expected analytical signature.