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1620839-21-5

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1620839-21-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1620839-21-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,2,0,8,3 and 9 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1620839-21:
(9*1)+(8*6)+(7*2)+(6*0)+(5*8)+(4*3)+(3*9)+(2*2)+(1*1)=155
155 % 10 = 5
So 1620839-21-5 is a valid CAS Registry Number.

1620839-21-5Downstream Products

1620839-21-5Relevant articles and documents

Molecular iodine mediated regioselective synthesis of pyranocoumarins and bis-fused benzo-2 H -pyran derivatives

Majumdar,Sinha, Biswajit,Ansary, Inul,Ganai, Sintu,Ghosh, Debankan,Roy,Sridhar

, p. 1807 - 1814 (2014)

A simple and straightforward approach for the regioselective synthesis of pyranocoumarin and bis-fused benzo-2H-pyran derivatives using mild, easy to handle, and cheaper molecular iodine mediated heterocyclization is described. Georg Thieme Verlag Stuttgart New York.

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