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403611-08-5

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403611-08-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 403611-08-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,0,3,6,1 and 1 respectively; the second part has 2 digits, 0 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 403611-08:
(8*4)+(7*0)+(6*3)+(5*6)+(4*1)+(3*1)+(2*0)+(1*8)=95
95 % 10 = 5
So 403611-08-5 is a valid CAS Registry Number.

403611-08-5Downstream Products

403611-08-5Relevant articles and documents

Thermal pericyclic tandem reactions

Hopf, Henning,Wolff, Joachim

, p. 4009 - 4030 (2007/10/03)

Gas phase thermal isomerizations of twelve acetylenic systems, all of which can in principle undergo two successive pericyclic steps, are described. The substrates, the syntheses and spectroscopic properties of which are presented, are formal derivatives of but-2-yne, with different functional groups in the 1- and the 4-positions. The Cope, Claisen, Claisen ester, retro-ene, 1,5-hydrogen shift, and 1,5-homo hydrogen-shift processes were employed as the pericyclic steps from which the tandem processes were composed. The compositions of the pyrolysates obtained were determined over broad temperature ranges, and the mechanisms of the individual steps producing the pyrolysis products are discussed.

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