core
Retrosynthesis
Plan synthesis backward from target to commercial starting materials.
Chemistry, finally answered correctly.
The chemistry copilot that searches 200M+ papers, verifies every structure, and never invents a citation. Built for the lab, priced for the chemist.
- 200M+papers indexed
- 12,847chemists onboard
- 99.4%structures verified
- 6languages
you open four tabs.we close them.
- draw
ChemDraw - ask
ChatGPT - lookup
PubChem - search
Reaxys
cheemly
all of it. verified.
moll draws, searches, plans the synthesis, and verifies every atom — so you read the answer, not the ten tabs it took to find it.
ask once.watch it think.
Type the question. moll opens the tools, runs the chemistry, verifies the answer, and writes it back to you.
chatcheemly
ask cheemly…
Predict the 1H NMR for aspirin and cite the source.
you
moll
- Aromatic protons: 7.85 (dd), 7.55 (td), 7.30 (td), 7.10 (dd) ppm
- Acetyl methyl: 2.35 ppm (s, 3H)
- Carboxylic acid OH: ~10–11 ppm (broad)
verified · J. Org. Chem.
cheemly/workspace/aspirin · 1H NMR
P
S
N
✓
1H NMR · aspirin · CDCl3
δ ppmmultintassignment
- 10.5br s1Hcarboxylic OH
- 7.85dd1Haromatic H-3
- 7.55td1Haromatic H-5
- 2.35s3Hacetyl OCOCH3
verified by mollCDCl3 · 1H · 400 MHz
every answer,checked.
Same prompt, two paths. moll refuses to ship a structure that doesn't pass the gate.
raw LLMno verification
prompt
Give me the SMILES for bromobenzene.
01answer: C1=CC=CC=C1Br
02// 5-membered ring + Br
03[no validation, no source]
missing 1 ring atom · not bromobenzene
mollcritic gate
prompt
Give me the SMILES for bromobenzene.
01parse · C1=CC=CC=C1Br
02atoms · 5 ring C, expected 6
03re-prompt with valence constraint
04verified · c1ccc(Br)cc1 · C6H5Br
verified · J. Org. Chem. 2019
every answer passes
Parse SMILES
via RDKit
Atom balance
via RDKit
Name ↔ struct
via OPSIN
Real DOI
via Semantic Scholar
every tool.one workspace.
Seven specialist modules sharing the same memory, the same canvas, the same verified output.
NMR predictor
Predict 1H and 13C spectra in seconds, with peak assignments and references.
IUPAC ↔ SMILES
Translate any structure between systematic name and machine code.
Paper search
Search 200M+ papers with structure-aware semantic queries.
Safety reports
GHS-style hazard drafts generated from any SMILES.
Lab notebook
Save runs, search the past, share results with your team.
Workflow builder
Drag-and-drop chemistry pipelines, ready in minutes.
internal chemistry benchmark
General AI can answer chemistry.Cheemly can work with it.
Cheemly matches leading assistants on answers — then turns them into verified, editable chemistry work.
why cheemly wins the workflow
Answers become chemistry objects.
Reports, structures, canvas, and 3D stay connected.
100%
lab report quality
100%
molecule accuracy
100 fit
Cheemly
Best when chemistry must become work.
Claude 4.7 Opus
Great prose. Less workspace.
Google Gemini
Strong visuals. Less control.
ChatGPT 5.5 Thinking
Strong reasoning. Weak workflow.
capability
Cheemly
General AI tools
Lab reports
Yes
Yes
Chemistry Q&A
Yes
Yes
Molecule drawing
Yes
Sometimes
Structure checks
Yes
No
Editable canvas
Yes
No
2D + 3D views
Yes
No
Report + molecule
Yes
No
Chemistry-first
Yes
No
Internal benchmark · chemistry workflow fit
lab access.priced for chemists.
Token-based, no surprise overages. See your meter, always. Cancel any time.
- Free$0/mo
Try everything moll can do.
- Verified chemistry chat
- 1 saved workflow
- IUPAC ↔ SMILES translator
- Basic NMR prediction
- Export everything (JSON, MOL, PDF)
- Lab$20/mo
Everything most chemists need, daily.
- Split-screen workspace
- Retrosynthesis planner
- Paper search across 200M+ articles
- 50 saved workflows + lab notebook
- All six languages
- Priority queue
- Lab Pro$80/mo
Heavy compute and API access.
- Everything in Lab
- DFT input generators (Gaussian, ORCA, Psi4)
- Full spectra prediction (1H, 13C, IR, MS)
- API access + webhooks
- Unlimited workflows
- Priority email support
quota renews weekly · cancel anytime · no card required for Free
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before you ask.we already answered.
Six honest answers to the questions chemists send first.
Yes. Prompts and structures are encrypted at rest, never used to train shared models, and exportable on demand. Delete everything from one screen, any time.
Every structure passes through RDKit for parsing and atom balance, OPSIN for name ↔ structure round-trip, and Semantic Scholar for citation checks. Anything that fails is re-prompted, never shipped.
Anytime. Free stays free. Paid tiers cancel mid-cycle with no penalty. Your workflows and notebook stay accessible on Free after downgrade.
Generic LLMs hallucinate structures and invent papers. moll refuses to ship an answer that does not pass the critic gate. Same effort from you, very different floor.
Yes — JSON, CDXML, MOL, SDF, PDF, or a one-click ZIP. Your data, your hard drive. Even on Free.
Lab Plus generates Gaussian, ORCA, and Psi4 input files from any drawn structure with sensible defaults you can override.