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1562381-55-8

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1562381-55-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1562381-55-8 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,5,6,2,3,8 and 1 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1562381-55:
(9*1)+(8*5)+(7*6)+(6*2)+(5*3)+(4*8)+(3*1)+(2*5)+(1*5)=168
168 % 10 = 8
So 1562381-55-8 is a valid CAS Registry Number.

1562381-55-8Relevant articles and documents

Hetero-Tetradehydro-Diels-Alder Cycloaddition of Enynamides and Cyanamides: Gold-Catalyzed Generation of Diversely Substituted 2,6-Diaminopyridines

Shcherbakov, Nikolay V.,Dar'In, Dmitry V.,Kukushkin, Vadim Yu.,Dubovtsev, Alexey Yu.

, p. 7218 - 7228 (2021/05/29)

Gold(I)-catalyzed hetero-tetradehydro-Diels-Alder cycloaddition of enynamides and cyanamides comprises an efficient route to diversely substituted 2,6-diaminopyridines (28 examples; yields up to 99%). The reaction proceeds under very mild conditions (DCM, rt) with high functional group tolerance. The obtained 2,6-diaminopyridines represent a useful synthetic platform with an easily modulated substitution pattern for subsequent functionalizations of both the pyridine core and the N-substituents.

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