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339201-10-4

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339201-10-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 339201-10-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,3,9,2,0 and 1 respectively; the second part has 2 digits, 1 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 339201-10:
(8*3)+(7*3)+(6*9)+(5*2)+(4*0)+(3*1)+(2*1)+(1*0)=114
114 % 10 = 4
So 339201-10-4 is a valid CAS Registry Number.

339201-10-4Relevant articles and documents

Synthesis of Nα-Z, Nβ-Fmoc or Boc protected α-hydrazinoacids and study of the coupling reaction in solution of Nα-Z-α-hydrazinoesters

Bouillon, Isabelle,Brosse, Nicolas,Vanderesse, Régis,Jamart-Grégoire, Brigitte

, p. 2223 - 2234 (2007/10/03)

The preparation of chiral orthogonally protected Nα-Z, Nβ-Fmoc- or Boc-α-hydrazinoacids derivatives, directly suitable for SPPS, is described in six steps with good yields starting from the corresponding α-aminoacids. The coupling reaction assays performed in liquid phase between Nα-Z-hydrazinoesters and N-Fmoc-α-aminoacids demonstrated the low reactivity of the hydrazinoester derivatives. However, we found that the acid fluoride method allowed the formation of hydrazinodipeptides almost quantitatively.

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