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139392-84-0

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139392-84-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 139392-84-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,3,9 and 2 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 139392-84:
(8*1)+(7*3)+(6*9)+(5*3)+(4*9)+(3*2)+(2*8)+(1*4)=160
160 % 10 = 0
So 139392-84-0 is a valid CAS Registry Number.

139392-84-0Relevant articles and documents

A PRACTICAL SYNTHESIS OF α-AMINOPHOSPHONIC ACIDS

Genet, J. P.,Uziel, J.,Port, M.,Touzin, A. M.,Roland, S.,et al.

, p. 77 - 80 (2007/10/02)

The preparation of diterbutyl-N (diphenylmethylene) aminomethylphosphonate 3 in four steps (42percent overall yield) from N-hydroxymethyl phthalimide 1 is described.Various α substituted α-aminophosphonic acids 5 containing functionalized unsaturated chains have been synthesized by alkylation of 3 under phase transfer catalysis with halides, Michael acceptors and palladium promoted reactions, followed by mild hydrolysis. Key words: Schiff bases of diterbutylaminomethylphosphonate; phase transfer catalysis; palladium-catalyzed allylic substitution; Michael additions.

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