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4-Hydroxy-4,4-diphenylbutanoic acid, also known as 4-hydroxy-4,4-diphenyl-2-butenoic acid or commonly referred to as Diphenolic acid, is a white crystalline organic compound with the chemical formula C16H16O4. It is a derivative of butanoic acid, featuring two phenyl groups attached to the carbon-4 position and a hydroxyl group at the same position. 4-hydroxy-4,4-diphenylbutanoic acid is an important intermediate in the synthesis of various pharmaceuticals, agrochemicals, and polymers, particularly in the production of polycarbonates and polyurethanes. Diphenolic acid is known for its stability and reactivity, making it a valuable building block in the chemical industry.

32858-92-7

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32858-92-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 32858-92-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,2,8,5 and 8 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 32858-92:
(7*3)+(6*2)+(5*8)+(4*5)+(3*8)+(2*9)+(1*2)=137
137 % 10 = 7
So 32858-92-7 is a valid CAS Registry Number.

32858-92-7Relevant academic research and scientific papers

Epoxides : Part II - Synthesis of Butyrolactones

Moussa, G. E. M.,Basyouni, M. N.,Shaban, M. E.

, p. 800 - 801 (2007/10/02)

1,1-Diarylethylene oxides (Ia-c) react with diethyl malonate in the presence of sodium ethoxide to give γ,γ-diaryl-α-ethoxycarbonyl-γ-butyrolactones (IIa-c) which yield the carboxylactones (IIIa-c) upon alkaline hydrolysis.Decarboxylation of IIIa-c furnishes the corresponding γ,γ-diaryl-γ-butyrolactones (IVa-c).

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