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3-[hydroxy(4-methoxyphenyl)methyl]-2-benzofuran-1(3H)-one is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

81428-85-5

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81428-85-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81428-85-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,4,2 and 8 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 81428-85:
(7*8)+(6*1)+(5*4)+(4*2)+(3*8)+(2*8)+(1*5)=135
135 % 10 = 5
So 81428-85-5 is a valid CAS Registry Number.

81428-85-5Relevant academic research and scientific papers

THE CHEMISTRY OF PHTALIDE-3-CARBOXYLIC ACID - I DECARBOXYLATION ON THE PRESENCE OF THE ALDEHYDES

Prager, Rolf H.,Schiesser, Carl H.

, p. 1517 - 1522 (2007/10/02)

The decarboxylation of phthalide-3-carboxylic acid (3-oxo-1,3-dihydroisobenzofuran-1-carboxylic acid) has been studied in the melt, in dimethylsulfoxide, and in the presence of aromatic aldehydes.The latter are efficiently trapped to produce mixtures of 3-arylidene-phthalides and 3-(arylhydroxymethyl)phthalides.Kinetic and other evidence supports the proposal that this reaction occurs in a tight cyclic transition state.

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