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403655-45-8

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403655-45-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 403655-45-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,0,3,6,5 and 5 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 403655-45:
(8*4)+(7*0)+(6*3)+(5*6)+(4*5)+(3*5)+(2*4)+(1*5)=128
128 % 10 = 8
So 403655-45-8 is a valid CAS Registry Number.

403655-45-8Downstream Products

403655-45-8Relevant articles and documents

A [3,3] sigmatropic and novel ipso [3,3] sigmatropic rearrangement of 1-hydroxyindole chemistry

Fukui, Yoshikazu,Kobayashi, Tetsuya,Kawasaki, Toshiya,Yamada, Fumio,Somei, Masanori

, p. 465 - 483 (2019/08/02)

Utilizing 1-aryloxyindole derivatives, we found a new type of [3,3] sigmatropic rearrangement reaction. We named it as ipso [3,3] sigmatropic rearrangement. The product structures are strictly determined by X-ray crystallographic analysis. Normal [3,3] sigmatropic rearrangement of 1-hydroxyindole derivative was found to be a useful synthetic method for 2H-pyrazino[1',2':1,5]pyrrolo[2,3-b]indole-1,4-dione derivative.

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