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23458-22-2

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23458-22-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 23458-22-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,3,4,5 and 8 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 23458-22:
(7*2)+(6*3)+(5*4)+(4*5)+(3*8)+(2*2)+(1*2)=102
102 % 10 = 2
So 23458-22-2 is a valid CAS Registry Number.

23458-22-2Downstream Products

23458-22-2Relevant articles and documents

Incorporation of unnatural amino acid derivatives into a peptide bond via an oxime ester catalysed by papain or lipase

Chen, Shui-Tein,Tsai, Chin-Far,Wang, Kung-Tsung

, p. 165 - 166 (1996)

In the presence of an oxime in the reaction solution, papain and lipase P (Pseudomonas from Amano) catalysed the stereoselective transesterification of an N-protected amino acid or peptide ester to form an active (oxime) ester which in turn underwent peptide bond formation with several natural and unnatural amino acid derivatives (proline, N-methylglycine, N-methylalanine, α-methylphenylalanine).

Amino Acids and Peptides; 67. Easy Preparation and Use of Benzyloxycarbonyl Derivatives of Amino Acid Chlorides and α-Hydroxycarboxylic Acid Chlorides

Schmidt, Ulrich,Kroner, Matthias,Beutler, Ulrich

, p. 475 - 477 (2007/10/02)

N-Benzyloxycarbonyl amino acid chlorides and α-benzyloxycarbonyloxy carboxylic acid chlorides are readily available by treating the corresponding carboxylic acids with 1-chloro-N,N,2-trimethyl-1-propen-1-amine.They can be immediately reacted with O-, N- and C-nucleophiles to afford peptides, ketones and esters.

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