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4-[4-(3,5-Dimethyl-phenoxy)-but-2-ynyloxy]-chromen-2-one is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

155335-86-7

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155335-86-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 155335-86-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,5,3,3 and 5 respectively; the second part has 2 digits, 8 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 155335-86:
(8*1)+(7*5)+(6*5)+(5*3)+(4*3)+(3*5)+(2*8)+(1*6)=137
137 % 10 = 7
So 155335-86-7 is a valid CAS Registry Number.

155335-86-7Relevant 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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