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Chemisode
Learn organic chemistry.
Molecule Builder
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Enter a semi-structural formula or a supported organic name. Use the input mode only if Chemisode reads it incorrectly. Ionic forms can be entered as NH3+, COO-, COONa or (RCOO-)2Mg.
Enter a molecule to generate a name.
Enter a supported formula or organic name.
Examples
CH3CH2OH
CH3COOCH2CH3
CH3CH(OH)CH=CHCOOH
CH₃CH₂NH₃⁺
CH₃COO⁻
CH₃COONa
(CH₃COO⁻)₂Mg
ethanol
propan-2-ol
2-aminoethan-1-ol
ethyl 2-chloroethanoate
4-amino-3-hydroxybutan-2-one
Displayed structure
Skeletal structure
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Chemistry text formatter
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Formatted Unicode outputEditable
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Examples
H2SO4 + NaOH -> Na2SO4 + H2O
H₂SO₄ + NaOH → Na₂SO₄ + H₂O
H₂SO₄ + NaOH → Na₂SO₄ + H₂O
SO4^2-
SO₄²⁻
SO₄²⁻
CH3CH2OH
CH₃CH₂OH
CH₃CH₂OH
CH3C#CH
CH₃C≡CH
CH₃C≡CH
Name this molecule
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This molecule
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How scoring works
Incorrect answers cost 5 XP and structure hints cost 3 XP. Fast correct answers earn +5 XP. Five correct answers in a category earns mastery. New questions unlock after you answer correctly or reveal at 0 XP.
Semi-structural formula
Select New molecule to begin.
Displayed full structure
Skeletal structure
Question difficulty guide
Easy
Short names and simple structures
Short names and simple structures
Medium
Longer chains or one locant
Longer chains or one locant
Hard
Multiple features, unsaturation or a branch
Multiple features, unsaturation or a branch
Super Hard
More complex functional-group combinations
More complex functional-group combinations
Compare two molecules side by side.
Molecule A
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Molecule B
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Name and semi-structural formula
Displayed full structure
Teaching spectra
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Organic Analysis
Use composition, spectra and tests to identify the unknown.
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Chemical tests
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Complete the organic reactionComplete the highlighted boxes.
Complete the highlighted boxes. Type organic compounds; choose reagents from the list.
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Choose from the reagent list
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5 correct = mastered
Reaction guide
Hydrocarbons
Halogenation, cracking, addition and polymerisation
Halogenation, cracking, addition and polymerisation
Substitution
Chloro → hydroxyl or amino; hydroxyl → amino
Chloro → hydroxyl or amino; hydroxyl → amino
Oxidation
Primary alcohol → aldehyde / acid; secondary alcohol → ketone
Primary alcohol → aldehyde / acid; secondary alcohol → ketone
Condensation
Esterification and amide formation
Esterification and amide formation
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