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1638642-76-8

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1638642-76-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1638642-76-8 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,3,8,6,4 and 2 respectively; the second part has 2 digits, 7 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1638642-76:
(9*1)+(8*6)+(7*3)+(6*8)+(5*6)+(4*4)+(3*2)+(2*7)+(1*6)=198
198 % 10 = 8
So 1638642-76-8 is a valid CAS Registry Number.

1638642-76-8Downstream Products

1638642-76-8Relevant academic research and scientific papers

Organocatalytic oxidative annulation of benzamide derivatives with alkynes

Manna, Srimanta,Antonchick, Andrey P.

supporting information, p. 7324 - 7327 (2014/07/21)

Organocatalytic annulation by functionalization of benzamide derivatives with alkynes has been developed. We report a new approach of cycloaddition under mild reaction conditions using simple catalysts, such as iodobenzene and peracetic acid, as oxidant. Those novel, mild reaction conditions provided a straightforward synthesis of isoquinolones with fast reaction rate. Notable selectivity in annulation of unsymmetrically disubstituted alkynes was demonstrated.

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