成人免费xx,国产又黄又湿又刺激不卡网站,成人性视频app菠萝网站,色天天天天

Home Cart Sign in  
Chemical Structure| 123-76-2 Chemical Structure| 123-76-2
Chemical Structure| 123-76-2

*Storage: {[sel_prStorage]}

*Shipping: {[sel_prShipping]}

{[proInfo.proName]}

CAS No.: 123-76-2

,{[proInfo.pro_purity]}

Levulinic acid is used as a precursor for pharmaceuticals, plasticizers, and various other additives.

Synonyms: 4-Oxovaleric acid; NSC 3716

4.5 *For Research Use Only !

{[proInfo.pro_purity]}
Cat. No.: {[proInfo.prAm]} Purity: {[proInfo.pro_purity]}

Change View

Size Price VIP Price

US Stock

Global Stock

In Stock
{[ item.pr_size ]} Inquiry {[ getRatePrice(item.pr_usd,item.pr_rate,item.mem_rate,item.pr_is_large_size_no_price, item.vip_usd) ]}

US Stock: ship in 0-1 business day
Global Stock: ship in 2 weeks

  • {[ item.pr_size ]}

In Stock

- +

Please Login or Create an Account to: See VIP prices and availability

US Stock: ship in 0-1 business day
Global Stock: ship in 2 weeks

  • 1-2 Day Shipping
  • High Quality
  • Technical Support
Product Citations

Alternative Products

Product Details of Levulinic acid

CAS No. :123-76-2
Formula : C5H8O3
M.W : 116.12
SMILES Code : C(C(C)=O)CC(O)=O
Synonyms :
4-Oxovaleric acid; NSC 3716
MDL No. :MFCD00002796
InChI Key :JOOXCMJARBKPKM-UHFFFAOYSA-N
Pubchem ID :11579

Safety of Levulinic acid

GHS Pictogram:
Signal Word:Danger
Hazard Statements:H302-H317-H318
Precautionary Statements:P261-P264-P270-P272-P280-P301+P312+P330-P302+P352-P305+P351+P338+P310-P333+P313-P501

Application In Synthesis of Levulinic acid

* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.

  • Upstream synthesis route of [ 123-76-2 ]
  • Downstream synthetic route of [ 123-76-2 ]

[ 123-76-2 ] Synthesis Path-Upstream   1~2

  • 1
  • [ 71-23-8 ]
  • [ 123-76-2 ]
  • [ 645-67-0 ]
YieldReaction ConditionsOperation in experiment
88 %Chromat. With caesium carbonate In toluene for 2 h; General procedure: Esterification of levulinic acid was carried out in a 50mL round bottom flask equipped with a reflux condenser. In a typical catalytic reaction the catalyst (40mg) was added to a mixture of levulinic acid and ethanol with the molar ratio of LA: alcohol=1:8 (ethanol acts as reagent cum solvent) and the mixture was magnetically stirred at 333K for 2h. A portion of the reaction mixture was separated after the scheduled reaction time through filtration and the filtrate was then analyzed through the gas chromatography (GC) equipped with a flame-ionized detector and a capillary column. All compounds were characterized on the basis of their spectroscopic data (1H NMR) and by comparison with those reported in the literature.
References: [1] RSC Advances, 2016, vol. 6, # 3, p. 2106 - 2111.
[2] Journal of the American Chemical Society, 1930, vol. 52, p. 4883.
[3] Journal of the American Chemical Society, 1933, vol. 55, p. 3393.
[4] Patent: US2029412, 1934, , .
[5] Journal fuer Praktische Chemie (Leipzig), 1955, vol. <4> 1, p. 153,154.
[6] Patent: WO2010/102203, 2010, A2, . Location in patent: Page/Page column 26-27.
[7] Green Chemistry, 2014, vol. 16, # 2, p. 785 - 791.
[8] Journal of Molecular Catalysis A: Chemical, 2017, vol. 426, p. 30 - 38.
[9] Applied Catalysis A: General, 2017, vol. 547, p. 237 - 247.
[10] Catalysis Today, 2018, vol. 309, p. 253 - 262.
  • 2
  • [ 57-55-6 ]
  • [ 123-76-2 ]
  • [ 5413-49-0 ]
  • [ 645-67-0 ]
  • [ 1679-47-6 ]
References: [1] International Journal of Chemical Kinetics, 2019, .
 

Historical Records

Technical Information

Categories