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87363-81-3

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87363-81-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 87363-81-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,3,6 and 3 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 87363-81:
(7*8)+(6*7)+(5*3)+(4*6)+(3*3)+(2*8)+(1*1)=163
163 % 10 = 3
So 87363-81-3 is a valid CAS Registry Number.

87363-81-3Relevant articles and documents

Dehydrooligopeptides. VII. Convenient Synthesis of Various Dehydrodi- and tripeptide Esters by Using N-Carboxy α-Dehydroamino Acid Anhydride

Shin, Chuung-gi,Yonezawa, Yasuchika,Ikeda, Masahiro

, p. 3573 - 3579 (2007/10/02)

The one-pot syntheses of N-protected Δ1- and Δ2-dehydrodipeptide esters by the coupling of N-carboxy α-dehydroamino acid anhydride (ΔNCA) with several kinds of C- or N-protected L-α-amino acids are described.In addition, it was found that a similar coupling of ΔNCA with both C- and N-protected α-amino acids also took place to give Δ2-dehydrotripeptide derivatives, involving eight kinds of important C-terminal segments of antrimycins and cirratiomycins.The configurational confirmation of the α-dehydroisoleucine residue of the antibiotics is also discussed.

FACILE AND USEFUL ONE-POT SYNTHESIS OF DEHYDROOLIGOPEPTIDES USING ΔNCA

Shin, Chung-gi,Yamada, Toyofumi,Yonezawa, Yasuchika

, p. 2175 - 2176 (2007/10/02)

One-pot coupling of ΔNCA with N- and C-terminus α-amino acid, peptide, or dehydropeptide was achieved to give various types of dehydrooligopeptides.

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