Structure, naming, isomers and reaction logic — from molecules to mechanisms.
Select what you want to expolre.
From structure to IUPAC name: A single workflow for both aromatic and non-aromatic systems.
This tool focuses on mastering fundamental IUPAC nomenclature rules, rather than serving as a universal solver for complex chemical structures.
This tool generates all constitutional isomers within the verified domain below:
1. Acyclic hydrocarbons: C₁–C₉ and derivatives
2. Non-aromatic monocyclic hydrocarbons: C₃–C₇ and derivatives
3. Aromatic monocyclic hydrocarbons (benzene core): C₆–C₉ and derivatives
Read more about what “derivatives” means
This tool generates all constitutional isomers within the following chemically verified domain. Enumeration is graph-canonicalized (no duplicates) and complete within these limits.
Choose a divalent atom/group to insert into the carbon skeleton. Results are symmetry-filtered (one representative per equivalent C–C bond).
A molecule with one stereogenic center has two possible configurations: R and S.
These two forms are enantiomers — non-superimposable mirror images with identical physical properties except for optical rotation.
An equal mixture of R and S is called a racemic mixture (± or dl).
In this tool, the glyph shows the four substituents around the chiral carbon ordered by CIP priority (1 → highest, 4 → lowest). R vs S depends on the clockwise/counter-clockwise arrangement when the lowest priority group points away from you.
A molecule with two stereogenic centers can have up to four configurations: RR, RS, SR, SS.
Enantiomer pairs: RR ↔ SS, RS ↔ SR
Diastereomer pairs: Examples: RR vs RS, RR vs SR, SS vs RS, SS vs SR
Some RS/SR molecules may be a meso compoumd if they contain an internal mirror plane; such molecules are achiral despite having two stereocenters.