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205520-79-2

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205520-79-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 205520-79-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,5,5,2 and 0 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 205520-79:
(8*2)+(7*0)+(6*5)+(5*5)+(4*2)+(3*0)+(2*7)+(1*9)=102
102 % 10 = 2
So 205520-79-2 is a valid CAS Registry Number.

205520-79-2Downstream Products

205520-79-2Relevant articles and documents

Enantio- and Diastereo-selective Synthesis of Pipecolic Acid Derivatives using the Aza-Diels-Alder Reaction of Imines with Dienes

Bailey, Patrick D.,Wilson, Robert D.,Brown, George R.

, p. 1337 - 1340 (2007/10/02)

Optically active pipecolic acid derivatives can be prepared by the aza-Diels-Alder reaction of simple dienes with the imine derived from ethyl glyoxylate and chiral 1-phenylethylamine; the cycloadditions are regiospecific, highly diastereoselective within the heterocyclic ring (>92percent exo with cyclic dienes, and 100percent endo with acyclic dienes), and lead to high asymmetric induction in most cases (average d.e. = 72percent).

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