4-Chromanone

Product Name: 4-Chromanone
CAS No.: 491-37-2
Chemical Name: 4-Chromanone
Synonyms: CHROMAN-4-ONE;CHROMANONE;Isochromanone;2,3-Dihydro-4H-1-benzopyran-4-one;4-chormanone;4-CHROMANONE;4-Chlomanone;CHROMANONE, 4-;4-Chromanone,99%;4-Chromanone >
CBNumber: CB4191157
Molecular Formula: C9H8O2
Formula Weight: 148.16
MOL File: 491-37-2.mol

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4-Chromanone Property

Melting point:: 35-38 °C(lit.)
Boiling point:: 127-128 °C13 mm Hg(lit.)
Density: 1.1291
refractive index: n20/D 1.575(lit.)
Flash point:: >230 °F
storage temp.: Keep in dark place,Sealed in dry,Room Temperature
form: Crystalline Powder, Crystals or Low Melting Mass
color: White to yellow
Water Solubility: Slightly soluble in water.
BRN: 124652
InChIKey: MSTDXOZUKAQDRL-UHFFFAOYSA-N
LogP: 1.990 (est)
CAS DataBase Reference: 491-37-2(CAS DataBase Reference)
NIST Chemistry Reference: 4H-1-Benzopyran-4-one, 2,3-dihydro-(491-37-2)
EPA Substance Registry System: 4H-1-Benzopyran-4-one, 2,3-dihydro- (491-37-2)

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Safety

Hazard Codes: Xi
Risk Statements: 33-36/37/38
Safety Statements: 24/25-36-26
WGK Germany: 2
RTECS: DJ2981225
TSCA: Yes
HazardClass: IRRITANT
HS Code: 29329990

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H303May be harmfulif swallowed

Precautionary statements

P270Do not eat, drink or smoke when using this product.

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

P403Store in a well-ventilated place.

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: 122351
Product name: 4-Chromanone
Purity: 97%
Packaging: 10g
Price: $143
Updated: 2024/03/01

TCI Chemical

Product number: C1175
Product name: 4-Chromanone
Purity: >98.0%(GC)
Packaging: 5g
Price: $59
Updated: 2024/03/01

TCI Chemical

Product number: C1175
Product name: 4-Chromanone
Purity: >98.0%(GC)
Packaging: 25g
Price: $179
Updated: 2024/03/01

Alfa Aesar

Product number: A11242
Product name: 4-Chromanone, 98+%
Packaging: 5g
Price: $51.65
Updated: 2024/03/01

Alfa Aesar

Product number: A11242
Product name: 4-Chromanone, 98+%
Packaging: 25g
Price: $173.65
Updated: 2024/03/01

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4-Chromanone Chemical Properties,Usage,Production

Chemical Properties

white to light yellow crystal powder

Uses

4-Chromanone has been used to study the substrate specificity and catalytic ability of 4-hydroxyacetophenone monooxygenase isolated from Pseudomonas fluorescens ACB

Definition

ChEBI: 4-Chromanone is a member of chromones.

Synthesis Reference(s)

The Journal of Organic Chemistry, 48, p. 5160, 1983 DOI: 10.1021/jo00174a003

Purification Methods

It has been recrystallised from pet ether, or purified by dissolving in *C6H6 washing with H2O, drying (MgSO4), evaporating and distilling in a vacuum, then recrystallising the residue. The liquid has a pleasant lemon-like odour. The semicarbazone has m 227o. [Loudon & Razdan J Chem Soc 4299 1954.] The oxime is prepared from 3g of chromanone, 3g NH2OH.HCl in EtOH (50mL), 6g K2CO3 and refluxed on a water bath for 6hours. The solution is poured into H2O, the solid is filtered off, dried and dissolved in hot *C6H6 which on addition of pet ether yields the oxime as glistening needles m 140o. Hydrolysis of this gives very pure chromanone. The benzal derivative is prepared from 3g of chromanone and 4g PhCHO in 50mL EtOH, heated to boiling, 10mL of conc HCl are added dropwise and set aside for several days. The derivative separates and is recrystallised from EtOH to give yellow needles, m 112o [Powell J Am Chem Soc 45 2711 1923]. Reaction with Pb(OAc)4 yields the 3-acetoxy derivative m 74o (from pet ether + trace of EtOAc) [Cavill et al. J Chem Soc 4573 1954, Beilstein 17/10V 14].

4-Chromanone Preparation Products And Raw materials

Raw materials

Phosphoric acid Phenol 3-Bromopropionic acid Sodium hydroxide Phosphorus pentoxide

Preparation Products

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4-Chromanone Suppliers

Americas 1 Belgium 2 China 194 Europe 3 France 1 Germany 5 India 31 Japan 5 Poland 2 Switzerland 2 The Netherlands 1 United Kingdom 13 United States 44 Global 304

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View Lastest Price from 4-Chromanone manufacturers

Hebei Weibang Biotechnology Co., Ltd

Product: 4-Chromanone 491-37-2
Price: US $0.00/KG
Min. Order: 1KG
Purity: 99%
Supply Ability: 10 mt
Release date: 2023-04-27

Hebei Mojin Biotechnology Co., Ltd

Product: 4-Chromanone 491-37-2
Price: US $0.00/kg
Min. Order: 1kg
Purity: 99%
Supply Ability: 1000tons
Release date: 2023-07-28

Dideu Industries Group Limited

Product: 4-Chromanone 491-37-2
Price: US $1.10/g
Min. Order: 1g
Purity: 99.00%
Supply Ability: 100 Tons Min
Release date: 2021-10-28

491-37-2, 4-ChromanoneRelated Search:

Potassium hydrogen phthalate Oxybenzone Tetrahydro-4H-pyran-4-one Benzophenone Dihydromyrcenol Centchroman DIETHYLPROPION 6-Bromo-4-chromanone 4-CHROMANONE 6-Fluoro-4-chromanone 6-Methoxy-3-chromanone 8-Fluoro-4-chromanone 7-Fluoro-4-chromanone 6-Methoxy-4-chromanone 6-Nitro-4-chromanone 6,8-DIMETHYL-4',5,7-TRIHYDROXYFLAVANONE 8-Methoxy-3-chromanone 7-Fluoro-3-chromanone

Isochromanone

,3-Dihydro-2-benzopyran-4-one

,3-Dihydro-4-benzopyranone

2,3-dihydro-4-benzopyranone

2,3-dihydro-4h-1-benzopyran-4-on

2,3-Dihydro-4H-1-benzopyran-4-one

4-chormanone

JRH-01801, Chroman-4-one, 97%

CHROMANONE

CHROMANONE, 4-

CHROMAN-4-ONE

2,3-DIHYDRO-4H-CHROMEN-4-ONE

2,3-DIHYDRO-1-BENZOPYRAN-4-ONE

2,4-DIHYDRO-1-BENZOPYRAN-4-ONE

4-CHROMANONE

4-Chlomanone

ChondrotinSulfateBp98

4-Chromanone, 98+%

4-Chromanone,99%

dihydrobenz-γ-pyrone

2H-1-Benzopyran-4(3H)-one

2,3-dihydrochroMen-4-one

4H-1-Benzopyran-4-one, 2,3-dihydro-

2,3-Dihydro-1-benzopyran-4-one, 2,3-Dihydro-4H-chromen-4-one

4-Chromanone &gt

4-Chromanone ISO 9001：2015 REACH

491-37-2

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