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148715-93-9

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148715-93-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 148715-93-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,8,7,1 and 5 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 148715-93:
(8*1)+(7*4)+(6*8)+(5*7)+(4*1)+(3*5)+(2*9)+(1*3)=159
159 % 10 = 9
So 148715-93-9 is a valid CAS Registry Number.

148715-93-9Relevant articles and documents

Phosphorus-based Reagents in Peptide Synthesis: Synthesis of Methionine-Enkephalin and the Solution Conformation of its N-Diphenylphosphinoyl Derivative

Smith, D. David,Boyd, Kenneth G.,Hopton, David,Baxter, Robert L.,Ramage, Robert

, p. 551 - 556 (2007/10/02)

Met5enkephalin 1 was synthesized by solution phase synthesis using the diphenylphosphinoyl (Dpp) group for α-amino group protection and diphenylphosphinoyl-carboxylic acid mixed anhydrides for carboxylate activation.These reagents proved to be compatible with both tyrosine and methionine side chain functionalities.A (1)H NMR study of the solution conformation of the N-terminal-protected pentapeptide DppMe5enkephalin 2 in dimethyl sulfoxide suggests that the peptide backbone of this derivative adopts a major conformation possessing a type I' β-bend between residues Gly2-Gyl3 with the side chains of the Tyr1 and Phe4 lying on the same side of the plane of the bend.The predominant conformation of the Phe4 and Met5 side chains appear to be tg+.

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