Product

ALPHA-PYRONE

CAS No.：504-31-4

Other grades of this product :

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;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
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 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
BRN	1511

Safety Information

Safety Statements	23-24/25
WGK Germany	3
F	8-9-23
HS Code	29322090

MSDS Information

Provider	Language
SigmaAldrich	English
ACROS	English

ALPHA-PYRONE Usage And Synthesis

Chemical Properties	clear yellow to brown liquid
Synthesis Reference(s)	Journal of the American Chemical Society, 90, p. 2318, 1968 DOI: 10.1021/ja01011a020Organic 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

Preparation Products

NSC 263484-->5-BROMO-2H-PYRAN-2-ONE,95%

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