R/S Configuration Solver — Stereochemistry & Chirality Practice Tool
Assign R or S configuration to any stereocenter with step-by-step CIP priority rules.
IChOFree
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Topics Covered
- ✓CIP priority rules (atomic number, mass)
- ✓R and S assignment
- ✓Enantiomers and diastereomers
- ✓Meso compounds
- ✓Fischer and Newman projections
- ✓Optical activity and specific rotation
How to Use
- 1Draw or select a molecule with stereocenters
- 2Apply CIP rules: assign priority 1–4 to substituents
- 3Determine clockwise (R) or counterclockwise (S) arrangement
Curriculum Alignment
IChO Syllabus
Included in IChO preparatory topics
Access
100% free · No account · No time limit
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