Isomer Explorer
Compare molecules side-by-side to classify their isomeric relationship.
Butane vs Isobutane
C₄H₁₀
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Ethanol vs Dimethyl Ether
C₂H₆O
(R,R)-Tartaric Acid vs meso-Tartaric Acid
C₄H₆O₆
(2R,3S)-2,3-Dibromobutane vs (2R,3R)-2,3-Dibromobutane
C₄H₈Br₂
L-Threonine (2S,3R) vs L-allo-Threonine (2S,3S)
C₄H₉NO₃
Cyclohexane vs Methylcyclopentane
C₆H₁₂
meso-2,3-Dibromobutane (2R,3S) vs (2R,3R)-2,3-Dibromobutane
C₄H₈Br₂
1-Propanol vs 2-Propanol
C₃H₈O
cis-1,2-Dichloroethene vs trans-1,2-Dichloroethene
C₂H₂Cl₂
(R)-Alanine vs (S)-Alanine
C₃H₇NO₂
(R)-Limonene vs (S)-Limonene
C₁₀H₁₆
(2R,3R)-Tartaric Acid vs (2S,3S)-Tartaric Acid
C₄H₆O₆
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What Are Isomers?
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About This Pair
Butane vs Isobutane
Same molecular formula (C₄H₁₀) but different connectivity. Butane is a straight chain; isobutane is branched.
Constitutional Isomers
Isomer Classification
Constitutional Isomers — Same formula, different connectivity
Enantiomers — Non-superimposable mirror images
Diastereomers — Stereoisomers that aren't mirror images
Cis/Trans Isomers — Different arrangement around C=C
Meso Compound — Stereocenters + internal mirror plane
Step 1 of 4
What Are Isomers?
←/→to navigate
swipe to navigate
About This Pair
Butane vs Isobutane
Same molecular formula (C₄H₁₀) but different connectivity. Butane is a straight chain; isobutane is branched.
Constitutional Isomers
Isomer Classification
Constitutional Isomers — Same formula, different connectivity
Enantiomers — Non-superimposable mirror images
Diastereomers — Stereoisomers that aren't mirror images
Cis/Trans Isomers — Different arrangement around C=C
Meso Compound — Stereocenters + internal mirror plane