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trans-7-hydroxy-2,3-diphenyl-2,3-dihydro-4H-1-benzopyran-4-one is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

18435-79-5

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18435-79-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 18435-79-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,4,3 and 5 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 18435-79:
(7*1)+(6*8)+(5*4)+(4*3)+(3*5)+(2*7)+(1*9)=125
125 % 10 = 5
So 18435-79-5 is a valid CAS Registry Number.

18435-79-5Relevant academic research and scientific papers

An efficient process for the synthesis of trans-2,3-disubstituted-2,3- dihydro-4H-1-benzopyran-4-ones (Chroman-4-ones)

Draper, Richard W.,Hu, Bin,Iyer, Radha V.,Li, Xun,Lu, Yuelie,Rahman, Mohammad,Vater, Eugene J.

, p. 1811 - 1817 (2000)

The piperidine catalyzed Knoevenagel condensation of 2'-aryl/alkyl-2- hydroxyacetophenones 7 and aryl/alkylaldehydes 8 in refluxing isopropyl alcohol with azeotropic removal of water affords, in high yield, equilibrium mixtures of E- and Z-chalcones 9 and

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