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681831-94-7

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681831-94-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 681831-94-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,8,1,8,3 and 1 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 681831-94:
(8*6)+(7*8)+(6*1)+(5*8)+(4*3)+(3*1)+(2*9)+(1*4)=187
187 % 10 = 7
So 681831-94-7 is a valid CAS Registry Number.

681831-94-7Downstream Products

681831-94-7Relevant articles and documents

Palladium-catalyzed direct alkoxycarbonylation of aromatic C-H bonds via selective C-C cleavage of a-keto esters

Zhou, Wei,Li, Pinhua,Zhang, Yicheng,Wang, Lei

, p. 2343 - 2352 (2013/10/01)

A novel palladium-catalyzed direct alkoxycarbonylation of 2-arylpyridines, 2-arylquinolines, benzo[h]quinolines, 2-phenylpyrimidines, N-pyrimidine pyrroles and N-pyrimidine indoles via aromatic C-H bond activation and selective C-C cleavage of a-keto esters has been developed. The method has the advantages of wide functional group tolerance, high selectivity, broad range of substrates and good yields.

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