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473987-31-4

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473987-31-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 473987-31-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,7,3,9,8 and 7 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 473987-31:
(8*4)+(7*7)+(6*3)+(5*9)+(4*8)+(3*7)+(2*3)+(1*1)=204
204 % 10 = 4
So 473987-31-4 is a valid CAS Registry Number.

473987-31-4Downstream Products

473987-31-4Relevant academic research and scientific papers

Synthetic approach to tetrodotoxin

Itoh, Tetsuji,Watanabe, Manabu,Fukuyama, Tohru

, p. 1323 - 1325 (2007/10/03)

A novel and stereoselective approach to tetrodotoxin is described. The tricyclic compound having several key functional groups on the cyclohexane ring was synthesized from p-anisaldehyde with control of the four chiral centers. Iodoaminocyclization, 1,3-dipolar cycloaddition, and Baeyer-Villiger oxidation are the key steps of our approach.

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