ChemicalBook > CAS DataBase List > ALPHA-PYRONE

ALPHA-PYRONE

Product Name
ALPHA-PYRONE
CAS No.
504-31-4
Chemical Name
ALPHA-PYRONE
Synonyms
2H-PYRAN-2-ONE;2-Pyrone;Coumalin;α-Pyron;cumalin;-Pyrone;α-pyrone;α-Pyrone;2-Pyranone;pyran-2-one
CBNumber
CB6766803
Molecular Formula
C5H4O2
Formula Weight
96.08
MOL File
504-31-4.mol
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ALPHA-PYRONE Property

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.)
Flash point:
94 °C
storage temp. 
2-8°C
form 
Liquid
color 
Clear yellow to brown
Odor
Pleasant hay-like, herbaceous-warm odor
BRN 
1511
LogP
-0.645 (est)
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Safety

Safety Statements 
23-24/25
WGK Germany 
3
F 
8-9-23
HS Code 
29322090
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H302Harmful if swallowed

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
463159
Product name
2H-Pyran-2-one
Purity
90%
Packaging
1g
Price
$243
Updated
2024/03/01
TCI Chemical
Product number
P1183
Product name
α-Pyrone
Purity
>98.0%(GC)
Packaging
1g
Price
$175
Updated
2024/03/01
TRC
Product number
A345500
Product name
α-Pyrone
Packaging
10mg
Price
$45
Updated
2021/12/16
AK Scientific
Product number
X6757
Product name
alpha-Pyrone
Packaging
250mg
Price
$124
Updated
2021/12/16
Activate Scientific
Product number
AS145932
Product name
Pyran-2-one
Purity
97%
Packaging
5G
Price
$693
Updated
2021/12/16
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ALPHA-PYRONE Chemical Properties,Usage,Production

Chemical Properties

clear yellow to brown liquid.
Polymerizes easily upon standing, particularly under alkaline conditions. Very slightly soluble in water, soluble in alcohol and oils.

Definition

ChEBI: 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 Description

2H-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 Methods

Dissolve -pyrone in Et2O, wash it with brine, dry (Na2SO4), f

ALPHA-PYRONE Preparation Products And Raw materials

Raw materials

Preparation Products

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ALPHA-PYRONE Suppliers

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View Lastest Price from ALPHA-PYRONE manufacturers

Dideu Industries Group Limited
Product
ALPHA-PYRONE 504-31-4
Price
US $1.10/g
Min. Order
1g
Purity
99.00%
Supply Ability
100 Tons Min
Release date
2021-10-29
Nanjing jinheyou Trading Co., Ltd.
Product
ALPHA-PYRONE 504-31-4
Price
US $0.00/g
Min. Order
1g
Purity
98%min
Supply Ability
20kg/month
Release date
2019-11-01
Career Henan Chemical Co
Product
ALPHA-PYRONE 504-31-4
Price
US $1.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
1ton
Release date
2019-07-09

504-31-4, ALPHA-PYRONERelated Search:

3-CARBOMETHOXY-2-PYRONE 4-Methoxy-6-methyl-2H-pyran-2-one Methyl isodehydroacetate ISODEHYDROACETIC ACID 2,4-Dimethyl-alpha-pyrone,4,6-DIMETHYL-ALPHA-PYRONE 4,6-DIPHENYL-2-PYRONE 4-Hydroxy-6-methyl-2-pyrone Cinobufotalin 6-AMYL-ALPHA-PYRONE 96+%,6-N-Amyl alpha-pyrone,6-pentyl-alpha-pyrone,alpha-Pyrone, 6-pentyl,6-AMYL-ALPHA-PYRONE Methyl coumalate Bufalin ALPHA-PYRONE ALPHA-PYRONE-5-CARBOXYLIC ACID,alpha-Pyrone-3-carboxylic acid 5-Carbethoxy-4,6-dimethyl-2-pyrone Sodium dehydroacetate 4-methoxy-6-(beta-(p-anisyl)vinyl)-alpha-pyron 5-NITRO-4-CHROMANONE 5-Decanolide

  • chloro-4’phenyl-4methyl-6phenyl-3tetrahdyro-3,4,5,6pyrone-6(3r*,4s*,6r*
  • Coumalin
  • pyran-2-one
  • 2H-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
  • 2H-PYRAN-2-ONE 99%
  • 2H-Pyran-2-one,97%
  • 2H-Pyran-2-one,99%
  • Pyrone,alpha-
  • chloro-4’phenyl-
  • 2H-Pyran-2-one, 97% 5GR
  • 2,4-Pentadienoic acid, 5-hydroxy-, delta-lactone
  • 2H-Pyran, 2-oxo-
  • 2h-pyran-2-one,tetrahydro-4-(4-chlorophenyl)-6-methyl-3-phenyl-,(3-alpha,4-be
  • 2-Pyranone
  • 2-Pyrone
  • 4-beta,6-alpha)-tetrahydro-4-(4-chlorophenyl)-6-methyl-3-phenyl-2h-(3-alph
  • α-Pyrone&gt
  • -Pyrone
  • ALPHA-PYRONE ISO 9001：2015 REACH
  • α-Pyrone
  • 504-31-4
  • Building Blocks
  • Heterocyclic Building Blocks
  • Pyrans
  • Building Blocks
  • Chemical Synthesis
  • Heterocyclic Building Blocks
  • Pyrans