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35704-34-8

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35704-34-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 35704-34-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,5,7,0 and 4 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 35704-34:
(7*3)+(6*5)+(5*7)+(4*0)+(3*4)+(2*3)+(1*4)=108
108 % 10 = 8
So 35704-34-8 is a valid CAS Registry Number.

35704-34-8Relevant articles and documents

HETEROCYCLES RELATED TO 2,4-DIBORA 1,3-DIAZAROBENZENE

Allaoud, Smail,Frange, Bernard

, p. 129 - 136 (2007/10/02)

The reaction of ortho-substituted arylamines oY-C6H4NH2 (Y=H, Cl, Br, Me) with BX3, (X=F, Cl, Br, I) was investigated.By suitable choice of Y and X, this reaction may be directed to obtain, in a quantitative way, a new kind of heterocycle I instead of the expected trimeric species (oYC6H4NBX)3.The formation of I was found to be related to the bulk of Y substituent and to the nature of X, increasing in the order BCl3 a tertiary amine added, always gives the corresponding borazines.Some derivatives of I were prepared (X=Me, Y=Br, Me) and characterized by NMR (1H, 13C and 11B) and mass spectra. In connection with this study, we were led to the question of atropisomerism in the N-triarylborazines (oYC6H4NBX)3 when the starting arylamine bears an ortho substituent Y.As far as the compound Y=Me, X=Me is concerned, a sole isomer, the C3t one, could be obtained instead of the two expected.

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