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2513-65-7

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2513-65-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 2513-65-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,5,1 and 3 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 2513-65:
(6*2)+(5*5)+(4*1)+(3*3)+(2*6)+(1*5)=67
67 % 10 = 7
So 2513-65-7 is a valid CAS Registry Number.

2513-65-7Relevant articles and documents

Preparation of aminals in water

Jur?ík, Václav,Wilhelm, René

, p. 3205 - 3210 (2007/10/03)

Aminals, which are used as protecting groups in syntheses and are part of many biologically active compounds, are normally prepared from aldehydes and diamines under conditions that remove water in order to shift the equilibrium to the side of the aminal.

Nucleophilic Addition to Substituted 1H-4,5-Dihydroimidazolium Salts

Salerno, Alejandra,Ceriani, Vanina,Perillo, Isabel A.

, p. 709 - 716 (2007/10/03)

1H-4,5-Dihydroimidazolium salts 1 react readily with nucleophilic reagents originating cyclic products which may be stable or become transformed into acyclic compounds maintaining the structural ethylenediamine unit. With methylmagnesium iodide compound le affords the expected imidazolidine, but in the case of substituted 1-aryl-3-methyl-2-phenyl salts 1b-d the N-aryl-N'-methylethylenediamines 3b-d and acetophenone (4) were isolated, the process representing the transfer of the C-2 unit to a nucleophilic carbon. With alkaline cyanides salts 1 react efficiently affording α,α-diaminonitriles 5. In these compounds the cyano group may be readily substituted by nucleophiles (hydroxyl anion, species with nucleophilic carbon and reagents that act by hydride ion transfer), in a way similar to the salts but with better yields.

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