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2-hydroxy-2-(triphenylphosphoranylidene)methoxycarbonyl-5-phenyl-2,3-dihydro-2,3-furanone is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

139231-67-7

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139231-67-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 139231-67-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,2,3 and 1 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 139231-67:
(8*1)+(7*3)+(6*9)+(5*2)+(4*3)+(3*1)+(2*6)+(1*7)=127
127 % 10 = 7
So 139231-67-7 is a valid CAS Registry Number.

139231-67-7Relevant academic research and scientific papers

Reactions of 5-aryl-furan-2,3-diones with acylmethylenetriphenylphosphoranes: Synthesis and biological activity of 3(2H)-furanone derivatives

Kozminykh,Igidov,Kozminykh,Aliev

, p. 99 - 106 (2007/10/02)

The Wittig reaction of 5-aryl-furan-2,3-diones 1 with acylmethylenetriphenylphosphoranes 2 conducted by heating under reflux in benzene solutions, proceeded regiospecifically to afford 2-acylmethylene-5-aryl-3(2H)-furanones 5 in good yields. When the star

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