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420849-29-2

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420849-29-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 420849-29-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,2,0,8,4 and 9 respectively; the second part has 2 digits, 2 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 420849-29:
(8*4)+(7*2)+(6*0)+(5*8)+(4*4)+(3*9)+(2*2)+(1*9)=142
142 % 10 = 2
So 420849-29-2 is a valid CAS Registry Number.

420849-29-2Downstream Products

420849-29-2Relevant articles and documents

Synthesis and properties of 4,5-dihydrobenzo[e]imidazo[2,1-c][1,4,2]diazaphosphinine derivatives

Ivanov, Vladimir V.,Yurchenko, Alexandr A.,Chernega, Alexander N.,Pinchuk, Alexandr M.,Tolmachev, Andrej A.

, p. 84 - 92 (2002)

A number of 4,5-dihydrobenzo[e]imidazo[2,1-c][1,4,2]diazaphosphinine derivatives were prepared by the direct phosphorylation of 1-(4-Chloro-phenylcarboxamido)-2-(1H-1-imidazolyl)-5-trifluoromethylbenzene in basic medium with phosphorus(III) bromide and dibromophenylphosphine. The amide was reacted with phosphorus(III) bromide to yield the tricyclic compound. The tricyclic compound with a trivalent phosphorus atom went through the diazaphosphine ring opening upon treatment with secondary amines in the presence of sulphur.

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