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55998-95-3

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55998-95-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 55998-95-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,5,9,9 and 8 respectively; the second part has 2 digits, 9 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 55998-95:
(7*5)+(6*5)+(5*9)+(4*9)+(3*8)+(2*9)+(1*5)=193
193 % 10 = 3
So 55998-95-3 is a valid CAS Registry Number.

55998-95-3Relevant articles and documents

Aldol Reaction of Aluminium Enolate Resulting from 1,4-Addition of R2AlX to α,β-Unsaturated Carbonyl Compound. A 1-Acylethenyl Anion Equivalent

Itoh, Akira,Ozawa, Shuji,Oshima, Koichiro,Nozaki, Hitosi

, p. 274 - 278 (2007/10/02)

Organoaluminium reagents R2AlX (X=SPh, SeMe) easily add to α,β-unsaturated carbonyl compounds in 1,4-fashion.The resulting aluminium enolates react with aldehydes to give aldol adducts in fair to good yields.Formal elimination of HX from the adducts provi

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