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218932-44-6

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218932-44-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 218932-44-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,8,9,3 and 2 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 218932-44:
(8*2)+(7*1)+(6*8)+(5*9)+(4*3)+(3*2)+(2*4)+(1*4)=146
146 % 10 = 6
So 218932-44-6 is a valid CAS Registry Number.

218932-44-6Downstream Products

218932-44-6Relevant articles and documents

Diarylborinic acids as efficient catalysts for selective dehydration of aldols

Ishihara, Kazuaki,Kurihara, Hideki,Yamamoto, Hisashi

, p. 597 - 599 (1997)

Diarylborinic acids with electron-withdrawing substituents at their aryl groups are efficient Lewis acid catalysts for Mukaiyama aldol condensation and selective dehydration of anti-aldols to α,β-enones in the presence of syn-aldols. The Lewis acidities of diarylborinic acids are much higher than those of the corresponding arylboronic acids.

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