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diethyl 5-methyl-4-phenyl-1H-pyrazol-3-ylphosphonate is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

1220140-20-4

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1220140-20-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1220140-20-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,2,0,1,4 and 0 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1220140-20:
(9*1)+(8*2)+(7*2)+(6*0)+(5*1)+(4*4)+(3*0)+(2*2)+(1*0)=64
64 % 10 = 4
So 1220140-20-4 is a valid CAS Registry Number.

1220140-20-4Downstream Products

1220140-20-4Relevant academic research and scientific papers

Phosphonylpyrazoles from bestmann-ohira reagent and nitroalkenes: synthesis and dynamic nmr studies

Muruganantham, Rajendran,Namboothiri, Irishi

supporting information; experimental part, p. 2197 - 2205 (2010/06/17)

Application of diethyl 1-diazo-2-oxopropylphosphonate (Bestmann-Ohira reagent) as a cycloaddition partner with nitroalkenes has been extensively investigated. Base-mediated reaction of the Bestmann-Ohira reagent with various nitroalkenes such as β-substit

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