R/S Stereocenter 3D Analyzer | Organic Chemistry | ShowMeClass

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R/S Stereocenter 3D Analyzer

Organic Chemistry · Stereochemistry

Learning Objectives

Determine CIP priorities

Visualize 3D tetrahedral geometry

Rotate lowest priority group back

Assign R or S configuration

Key Concepts

CIP Priority Rules:
1. Higher atomic number gets higher priority (#1 > #2 > #3 > #4).
2. Rotate molecule so group #4 points away (into the screen).
3. Draw a curve from #1 → #2 → #3.
Clockwise = R
Counter-Clockwise = S

StereocenterChiralityEnantiomer

Current Config:R

Select Molecule Type

Mirror Image

CIP Priorities

Target group #4 pointing away!