Isohumulone

Isohumulone

chembox new
ImageFile=Structure of Isohumulones.pngImageSize=200px
IUPACName=3,4-Dihydroxy-5-(3-methylbut- 2-enyl)-2-(3-methyl-1-oxobutyl)-4-(4- methyl-1-oxopent-3-enyl)-1- cyclopent-2-enone
OtherNames=
Section1=Chembox Identifiers
CASNo=25522-96-7
PubChem=93090
SMILES=CC(C)CC(=O)C1=C(C(C(C1=O)CC=C(C)C)(C(=O)CC=C(C)C)O)O
Section2=Chembox Properties
Formula=C21H30O5
MolarMass=362.46 g/mol
Appearance=
Density=
MeltingPt=
BoilingPt=
Solubility=
Section3=Chembox Hazards
MainHazards=
FlashPt=
Autoignition=

Isohumulones are compounds that contribute to the bitter taste of beer. The bitterness of beer is measured according to the International Bitterness Units scale, with one IBU corresponding to 1 part per million of isohumulone. When beer is exposed to light, these compounds can be decomposed in a reaction catalyzed by riboflavin, creating 3-methylbut-2-ene-1-thiol, a thiol which causes beer to develop a "skunky" flavor.Fact|date=July 2008

References


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