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ALPHA-PYRONE

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CAS:504-31-4
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  • 2025-11-18
  • CAS:504-31-4
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  • Purity: 99.00%
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  • 2019-11-08
  • CAS:504-31-4
  • Min. Order: 1g
  • Purity: 98%min
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  • ALPHA-PYRONE
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  • $1.00
  • 2019-07-10
  • CAS:504-31-4
  • Min. Order: 1KG
  • Purity: 99%
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ALPHA-PYRONE Basic information
Product Name:ALPHA-PYRONE
Synonyms:chloro-4’phenyl-4methyl-6phenyl-3tetrahdyro-3,4,5,6pyrone-6(3r*,4s*,6r*;Coumalin;pyran-2-one;α-pyrone;cumalin;tetrahydro-4-(4-chlorophenyl)-6-methyl-3-phenyl-,(3-alpha,4-beta,6-alpha)-2h-pyran-2-on;α-Pyron;ALPHA-PYRONE
CAS:504-31-4
MF:C5H4O2
MW:96.08
EINECS:207-990-5
Product Categories:Building Blocks;Chemical Synthesis;Heterocyclic Building Blocks;Pyrans
Mol File:504-31-4.mol
ALPHA-PYRONE Structure
ALPHA-PYRONE Chemical Properties
Melting point 8-9 °C
Boiling point 102-103 °C20 mm Hg(lit.)
density 1.197 g/mL at 25 °C(lit.)
refractive index n20/D 1.53(lit.)
Fp 94 °C
storage temp. 2-8°C
form Liquid
color Clear yellow to brown
OdorPleasant hay-like, herbaceous-warm odor
BRN 1511
InChIInChI=1S/C5H4O2/c6-5-3-1-2-4-7-5/h1-4H
InChIKeyZPSJGADGUYYRKE-UHFFFAOYSA-N
SMILESC1(=O)OC=CC=C1
LogP-0.645 (est)
Safety Information
Safety Statements 23-24/25
WGK Germany 3
F 8-9-23
HS Code 29322090
Storage Class10 - Combustible liquids
MSDS Information
ProviderLanguage
SigmaAldrich English
ACROS English
ALPHA-PYRONE Usage And Synthesis
Chemical Propertiesclear yellow to brown liquid.
Polymerizes easily upon standing, particularly under alkaline conditions. Very slightly soluble in water, soluble in alcohol and oils.
Uses2H-Pyran-2-one (a-Pyrone) is a heterocyclic building block. Photochemistry of 2H-pyran-2-one has been investigated by laser flash photolysis with infrared detection. Ketene and a bicyclic lactone were obtained as major photoproducts.
DefinitionChEBI: 2H-pyran-2-one is the simplest member of the class of 2-pyranones that is 2H-pyran with an oxo substituent at position 2.
Synthesis Reference(s)Journal of the American Chemical Society, 90, p. 2318, 1968 DOI: 10.1021/ja01011a020
Organic Syntheses, Coll. Vol. 6, p. 462, 1988
General Description2H-Pyran-2-one (a-Pyrone) is a heterocyclic building block. Photochemistry of 2H-pyran-2-one has been investigated by laser flash photolysis with infrared detection. Ketene and a bicyclic lactone were obtained as major photoproducts.
Purification MethodsDissolve -pyrone in Et2O, wash it with brine, dry (Na2SO4), f
ALPHA-PYRONE Preparation Products And Raw materials
Preparation ProductsNSC 263484-->5-BROMO-2H-PYRAN-2-ONE,95%-->Phosphonic acid, P,P'-1,2-phenylenebis-, P,P,P',P'-tetraethyl ester
Tag:ALPHA-PYRONE(504-31-4) Related Product Information
5-Decanolide 5-NITRO-4-CHROMANONE Sodium dehydroacetate 3-CARBOMETHOXY-2-PYRONE 4-Methoxy-6-methyl-2H-pyran-2-one Methyl isodehydroacetate ISODEHYDROACETIC ACID 4,6-DIPHENYL-2-PYRONE 4-Hydroxy-6-methyl-2-pyrone Cinobufotalin Methyl coumalate Bufalin ALPHA-PYRONE 5-Carbethoxy-4,6-dimethyl-2-pyrone Coumalic acid 6-Pentyl-2H-pyran-2-one YANGONIN 4,6-Dimethyl-2-pyrone