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868759-55-1

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868759-55-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 868759-55-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,6,8,7,5 and 9 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 868759-55:
(8*8)+(7*6)+(6*8)+(5*7)+(4*5)+(3*9)+(2*5)+(1*5)=251
251 % 10 = 1
So 868759-55-1 is a valid CAS Registry Number.

868759-55-1Relevant articles and documents

Facile peptide thioester synthesis via solution-phase tosylamide preparation

Manabe, Shino,Sugioka, Tomoyuki,Ito, Yukishige

, p. 849 - 853 (2007/10/03)

Preparation of peptide thioester is essential for native chemical ligation and block condensation. Our novel methodology involves conversion of the carboxylic acid of a peptide into a thioester using p-toluenesulfonyl isocyanate, followed by alkylation, t

4-Substituted prolyl sulfonamides as enantioselective organocatalysts for aldol reactions

Bellis, Evagelos,Vasilatou, Konstantina,Kokotos, George

, p. 2407 - 2413 (2007/10/03)

A series of prolyl and 4-substituted prolyl sulfonamides were prepared and were evaluated as organocatalysts of asymmetric aldol reaction. Using prolyl methanesulfonamide, 4-benzyloxy-prolyl methanesulfonamide and toluenesulfonamide and 4-hydroxy-prolyl t

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