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87633-45-2

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87633-45-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 87633-45-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,6,3 and 3 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 87633-45:
(7*8)+(6*7)+(5*6)+(4*3)+(3*3)+(2*4)+(1*5)=162
162 % 10 = 2
So 87633-45-2 is a valid CAS Registry Number.

87633-45-2Relevant articles and documents

Syntheses of Peptide Alkaloids, VII. - Amino Acids and Peptides, XXXVIII. - Total Synthesis of the 10,11-Dihydrozizyphines A and B

Schmidt, Ulrich,Boekens, Hilmar,Lieberknecht, Albrecht,Griesser, Helmut

, p. 1459 - 1467 (2007/10/02)

The 10,11-dihydrozizyphines A (13a) and B (15a) were synthesized.The cyclopeptide ring closure reactions were accomplished by catalytic hydrogenation of the linear ω-Z-amino acid pentafluorophenyl ester 8a.

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