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1,3-Butanedione, 4,4-difluoro-1-(5-hydroxy-3-methyl-1-phenyl-1H-pyrazol-4-yl)- is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

928819-59-4

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928819-59-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 928819-59-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,2,8,8,1 and 9 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 928819-59:
(8*9)+(7*2)+(6*8)+(5*8)+(4*1)+(3*9)+(2*5)+(1*9)=224
224 % 10 = 4
So 928819-59-4 is a valid CAS Registry Number.

928819-59-4Relevant academic research and scientific papers

3-(Polyhaloacyl)chromones and their hetero analogues: Synthesis and reactions with amines

Sosnovskikh, Vyacheslav Ya.,Irgashev, Roman A.,Barabanov, Mikhail A.

, p. 2707 - 2718 (2006)

2-Hydroxy-2-(polyhaloalkyl)chroman-4-ones react with diethoxymethyl acetate at 140-150°C for 15 minutes to give 3-(polyhaloacyl)chromones in good yields. The reactions of these compounds with amines proceeds at C-2 with pyrone ring-opening and formation o

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