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206879-63-2

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206879-63-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 206879-63-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,6,8,7 and 9 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 206879-63:
(8*2)+(7*0)+(6*6)+(5*8)+(4*7)+(3*9)+(2*6)+(1*3)=162
162 % 10 = 2
So 206879-63-2 is a valid CAS Registry Number.

206879-63-2Relevant articles and documents

Stepwise Construction of Some Hexahomooxacalix[3]arenes and Their Conformations in Solid State

Tsubaki, Kazunori,Otsubo, Tadamune,Tanaka, Kiyoshi,Fuji, Kaoru,Kinoshita, Takayoshi

, p. 3260 - 3265 (2007/10/03)

Hexahomooxacalix[3]arenes 1 bearing different substituents on their upper rim were synthesized from the corresponding linear trimers 2 by the acid-catalyzed cyclization. The X-ray crystallographic analyses of 1 (R1 = R3 = H, R2 = t-Bu, and R1 = Et, R2 = t-Bu, R3 = i-Pr) revealed that they adopt a cone conformation, owing to an intramolecular hydrogen-bonded network in the solid state.

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