Your Research.
Your Data.
Your Discovery.
Generate diverse drug-like molecules from expertly curated molecular scaffolds. Every molecule you create is 100% yours. Session-only storage, no permanent records, no IP claims.
Pick a chemical class and a count Generate molecules from that scaffold Everything lands in one accumulating working set Filter by property, rule set and structural alert Edit, mutate, annotate or copy any molecule Export to CSV or SDF. The molecules are yours
Pick a chemical class and a count Generate molecules from that scaffold Everything lands in one accumulating working set Filter by property, rule set and structural alert Edit, mutate, annotate or copy any molecule Export to CSV or SDF. The molecules are yours
Powerful Tools for Molecular Discovery
Scaffold-guided generation combined with human-guided editing, property prediction and filtering, so you can explore chemical space around a framework you already trust.
Curated Scaffold Classes
Each class gets its own model, trained on curated chemistry rather than scraped from everything at once. The models target antibiotic resistance first, with pandemic preparedness next, and the catalog keeps growing from there.
- Cephalosporin, penicillin and monobactam, live now
- Carbapenem and fluoroquinolone in development
- More therapeutic areas to follow
Integrated Design Workbench
Generate from a scaffold, then work the results: draw, edit and mutate structures, calculate properties, screen for structural alerts and predict ADMET, all without leaving the page.
- Draw, edit and mutate structures
- ADMET prediction and structural-alert screening
- Rule-based filtering and export with metadata
Transparent Science
Built on published, open-source foundations. Every library and model behind H:L is credited on the Licenses page.
- Open-source cheminformatics stack
- Published AI model architectures
- Methods you can cite
Privacy-First Architecture
8-hour session storage, then complete deletion. No long-term storage, no training on your data, no claims to your work or molecules.
- Session-only temporary storage
- No training on user data
- Export your molecules
Generate extensively to discover the gems worth pursuing
Explore Your First ScaffoldFrom Scaffold to Exportable Molecules in Minutes
Molecular design shouldn't start with installing toolkits, stitching libraries together and debugging environments. This streamlined workflow takes you from a chosen scaffold to exportable molecules fast.
Choose Your Scaffold
Select from expert-curated scaffold classes, each with its own trained model.
• Cephalosporin, penicillin, monobactam
• More classes in development
• Bring your own structures
Generate & Refine
AI generates diverse molecules in minutes. Apply filters, edit and mutate structures, predict properties.
• Balanced exploration & practicality
• Real-time property calculation
• Common med chem filters
Export Your Results
Download molecules with complete metadata. Session data automatically expires for your privacy.
• CSV and SDF, plus a session log
• Full property annotations
• Automatic session cleanup
From $0 to Full Discovery Campaigns
Transparent pricing that scales with your research. No contracts, no minimums, no surprises. Just molecules when you need them.
Free
Try the platform and see what's possible
- 100 generated molecules/month
- Every model and every workbench tool
- ADMET, alerts, editing and export
- No credit card required
Researcher
Coming Soon- Everything in Free
- A larger monthly generation allowance
- Email support
Professional
Coming Soon- Everything in Researcher
- Higher generation limits
- Priority email support