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197094-81-8

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197094-81-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 197094-81-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,7,0,9 and 4 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 197094-81:
(8*1)+(7*9)+(6*7)+(5*0)+(4*9)+(3*4)+(2*8)+(1*1)=178
178 % 10 = 8
So 197094-81-8 is a valid CAS Registry Number.

197094-81-8Relevant articles and documents

An efficient procedure for the synthesis of thiophene-containing polycyclic compounds via polyene cyclization promoted by the cross conjugated β-keto ester system

Liu, Hsing-Jang,Tran, Duong Duc-Phi

, p. 6501 - 6504 (2007/10/03)

The cross conjugated β-keto ester system was found to be an excellent promoter for polyene cyclization involving a thiophene ring to facilitate the synthesis of polycyclic thiophene-containing compounds.

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