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1421753-43-6

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1421753-43-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1421753-43-6 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,2,1,7,5 and 3 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1421753-43:
(9*1)+(8*4)+(7*2)+(6*1)+(5*7)+(4*5)+(3*3)+(2*4)+(1*3)=136
136 % 10 = 6
So 1421753-43-6 is a valid CAS Registry Number.

1421753-43-6Downstream Products

1421753-43-6Relevant articles and documents

Silver-catalyzed incorporation of carbon dioxide into o-alkynylaniline derivatives

Ishida, Tomonobu,Kikuchi, Satoshi,Tsubo, Tatsuyuki,Yamada, Tohru

, p. 848 - 851 (2013/03/28)

Benzoxazine-2-one derivatives are important heterocycle structures because of their various pharmaceutical activities, though their synthetic methods had been limited. In some cases, toxic reagents, such as phosgene or carbon monoxide, are required. It was found that a silver catalyst successfully promoted the incorporation of CO2 into o-alkynylanilines to afford the corresponding benzoxazine-2-ones bearing Z exo-olefin via 6-exo-dig cyclization at the activated C-C triple bond.

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