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22039-43-6

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22039-43-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 22039-43-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,2,0,3 and 9 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 22039-43:
(7*2)+(6*2)+(5*0)+(4*3)+(3*9)+(2*4)+(1*3)=76
76 % 10 = 6
So 22039-43-6 is a valid CAS Registry Number.

22039-43-6Relevant articles and documents

Reactions of α-halo-α,β-unsaturated aldehydes with secondary amines

Rulev,Keiko,Voronkov

, p. 125 - 128 (2007/10/03)

Reactions of 2-halo-2-alkenals R″(R′)C=CX-CHO with secondary amines R2NH occur as ipso-substitution of the halogen atom, along with fragmentation and condensation, yielding 1,2-diaminoethenes R2NCH=CHNR2, carbonyl compounds R″C(O)R′, 1,3-bis(amino)-2-haloolefins R″(R′)C(NR2)CX=CHNR2, and formamides R2NCHO. The ratio between the competing reactions depends on the structure of the starting compounds and the experimental conditions.

REACTIONS OF α-HALO-α,β-UNSATURATED ALDEHYDES WITH SECOND AMINES - NOVEL METHOD FOR THE PREPARATION OF N-DISUBSTITUTED α-AMINOCROTONALDEHYDES

Keiko, N. A.,Rulev, A. Yu.,Kalikhman, I. D.,Voronkov, M. G.

, p. 1668 - 1671 (2007/10/02)

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