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781668-64-2

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781668-64-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 781668-64-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,8,1,6,6 and 8 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 781668-64:
(8*7)+(7*8)+(6*1)+(5*6)+(4*6)+(3*8)+(2*6)+(1*4)=212
212 % 10 = 2
So 781668-64-2 is a valid CAS Registry Number.

781668-64-2Relevant academic research and scientific papers

Total synthesis and structural elucidation of azaspiracid-1. Final assignment and total synthesis of the correct structure of azaspiracid-1

Nicolaou,Koftis, Theocharis V.,Vyskocil, Stepan,Petrovic, Goran,Tang, Wenjun,Frederick, Michael O.,Chen, David Y.-K.,Li, Yiwei,Ling, Taotao,Yamada, Yoichi M. A.

, p. 2859 - 2872 (2007/10/03)

The molecular structure of azaspiracid-1, a neurotoxin isolated from mussels, has been elucidated by total synthesis which also enriched its supplies. The degradatively derived fragments of this marine biotoxin, compounds 5 (EFGHI), 6 (FGHI), and 40 (ABCD

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