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129075-92-9

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129075-92-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 129075-92-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,0,7 and 5 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 129075-92:
(8*1)+(7*2)+(6*9)+(5*0)+(4*7)+(3*5)+(2*9)+(1*2)=139
139 % 10 = 9
So 129075-92-9 is a valid CAS Registry Number.

129075-92-9Relevant articles and documents

Benzotriazole Mediated Synthesis of Methylenebisanilines

Katritzky, Alan R.,Lan, Xiangfu,Lam, Jamshed N.

, p. 341 - 346 (1990)

Methylenebisanilines and methylenebis(N,N-dialkylaniline)s are prepared by the reactions of 1-hydroxymethylbenzotriazole with anilines and with N,N-dialkylanilines under acidic conditions.Isolation of the intermediate 4-(benzotriazol-1-ylmethyl)anilines and the N,N-dialkyl analogues and their reactions with anilines allow the efficient preparation of both symmetrical and unsymmetrical members of both product classes.

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