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4-(2-cresoxymethyl)pyrano<3,2-c><1>benzopyran-5(2H)-one is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

151749-55-2

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151749-55-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 151749-55-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,1,7,4 and 9 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 151749-55:
(8*1)+(7*5)+(6*1)+(5*7)+(4*4)+(3*9)+(2*5)+(1*5)=142
142 % 10 = 2
So 151749-55-2 is a valid CAS Registry Number.

151749-55-2Relevant academic research and scientific papers

Studies in sigmatropic rearrangement: Rearrangement of 4-(4-alkylsubstituted aryloxybut-2-ynyloxy)benzopyran-2-ones

Majumdar, K. C.,Das, D. P.,Jana, G. H.,Khan, A. T.

, p. 120 - 124 (2007/10/02)

4-(4-o-Cresoxybut-2-ynyloxy)benzopyran-2-one (3a) and 4-(4-p-cresoxybut-2-ynyloxy)benzopyran-2-one (3b) give products 5 and 6 respectively both containing exocyclic double bond in addition to normal products, 4-aryloxymethylpyranobenzopyran-5(2H)-ones (4a and 4b).Other 4-(4-alkyl substituted aryloxybut-2-ynyloxy)benzopyran-2-ones (3c-f) furnish exclusively the 4-aryloxymethylpyranobenzopyran-5(2H)-ones.

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