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219561-84-9

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219561-84-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 219561-84-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,9,5,6 and 1 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 219561-84:
(8*2)+(7*1)+(6*9)+(5*5)+(4*6)+(3*1)+(2*8)+(1*4)=149
149 % 10 = 9
So 219561-84-9 is a valid CAS Registry Number.

219561-84-9Relevant articles and documents

An asymmetric synthesis of optically pure α,α-disubstituted amino aldehydes, α,α-disubstituted amino acids, and sterically demanding dipeptides

Wenglowsky, Steve

, p. 12468 - 12473 (2007/10/03)

Optically pure α-methyl-α-alkyl amino aldehydes were efficiently synthesized from the cyclohexylimine of propanal bearing an α-4(R),5(S)- diphenyl-2-oxazolidinone by asymmetric alkylation of the imine anion. α- Methylphenylalanine and α-methylleucine were

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