ChemicalBook > CAS DataBase List > 4-Chromanone

4-Chromanone

4-Chromanone Structure
4-Chromanone
  • CAS No.491-37-2
  • Chemical Name:4-Chromanone
  • CBNumber:CB4191157
  • Molecular Formula:C9H8O2
  • Formula Weight:148.16
  • MOL File:491-37-2.mol
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
  • CAS DataBase Reference :491-37-2(CAS DataBase Reference)
  • EWG's Food Scores :1
  • 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)
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
Hazard and Precautionary Statements (GHS)
  • Symbol(GHS)
  • Signal word
  • Hazard statements H303
  • Precautionary statements
4-Chromanone Price More Price(6)
  • Brand: Sigma-Aldrich
  • Product number: 122351
  • Product name : 4-Chromanone
  • Purity: 97%
  • Packaging: 10g
  • Price: $98.6
  • Updated: 2021/03/22
  • Buy: Buy
  • Brand: TCI Chemical
  • Product number: C1175
  • Product name : 4-Chromanone
  • Purity: >98.0%(GC)
  • Packaging: 5g
  • Price: $58
  • Updated: 2021/03/22
  • Buy: Buy
  • Brand: TCI Chemical
  • Product number: C1175
  • Product name : 4-Chromanone
  • Purity: >98.0%(GC)
  • Packaging: 25g
  • Price: $178
  • Updated: 2021/03/22
  • Buy: Buy
  • Brand: Alfa Aesar
  • Product number: A11242
  • Product name : 4-Chromanone, 98+%
  • Purity: 
  • Packaging: 5g
  • Price: $50.8
  • Updated: 2021/03/22
  • Buy: Buy
  • Brand: Alfa Aesar
  • Product number: A11242
  • Product name : 4-Chromanone, 98+%
  • Purity: 
  • Packaging: 25g
  • Price: $174
  • Updated: 2021/03/22
  • Buy: Buy

4-Chromanone Chemical Properties,Usage,Production

  • Chemical Properties white to light yellow crystal powder
  • 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
Preparation Products
Global(223)Suppliers
  • Supplier:
    Capot Chemical Co.,Ltd.
  • Tel:+86(0)13336195806 +86-571-85586718
  • Fax:+86-571-85864795
  • Email:sales@capotchem.com
  • Country:China
  • ProdList:20010
  • Advantage:60
  • Supplier:
    Henan Tianfu Chemical Co.,Ltd.
  • Tel:0371-55170693
  • Fax:0371-55170693
  • Email:info@tianfuchem.com
  • Country:CHINA
  • ProdList:22607
  • Advantage:55
  • Supplier:
    career henan chemical co
  • Tel:+86-371-86658258
  • Fax:
  • Email:sales@coreychem.com
  • Country:CHINA
  • ProdList:29961
  • Advantage:58
  • Supplier:
    Accela ChemBio Inc.
  • Tel:(+1)-858-699-3322
  • Fax:(+1)-858-876-1948
  • Email:info@accelachem.com
  • Country:United States
  • ProdList:19969
  • Advantage:58
  • Supplier:
    Chongqing Chemdad Co., Ltd
  • Tel:+86-13650506873
  • Fax:
  • Email:sales@chemdad.com
  • Country:CHINA
  • ProdList:37282
  • Advantage:58
  • Supplier:
    Alchem Pharmtech,Inc.
  • Tel:8485655694
  • Fax:
  • Email:sales@alchempharmtech.com
  • Country:United States
  • ProdList:63726
  • Advantage:58
491-37-2, 4-ChromanoneRelated Search:
  • 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
  • Heterocyclic Building Blocks
  • KETONE
  • Building Blocks
  • Benzopyrans
  • Fused Ring Systems