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128581-23-7

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128581-23-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 128581-23-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,5,8 and 1 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 128581-23:
(8*1)+(7*2)+(6*8)+(5*5)+(4*8)+(3*1)+(2*2)+(1*3)=137
137 % 10 = 7
So 128581-23-7 is a valid CAS Registry Number.

128581-23-7Relevant academic research and scientific papers

On a chemoenzymatic desymmetrization-ring expansion strategy towards functionalized N-heterocycles

Thiel, Daniel,Deska, Jan

supporting information, p. 1529 - 1532 (2013/08/23)

The direct combination of the desymmetrization of N-heterocyclic meso-diols using lipase from Mucor miehei as biocatalyst and subsequent ring expansion of the optically active products by activation of the remaining hydroxy group gives rise to functionalized nonsymmetrical piperidines in a highly enantio- and dia stereoselective manner. Georg Thieme Verlag Stuttgart. New York.

THE IMINE-EPOXIDE REARRANGEMENT IN THE FORMATION OF TRANS-2,6-DISUBSTITUTED PIPERIDINES. A STEREOSELECTIVE SYNTHESIS OF (+/-)-TENERAIC ACID.

Wasserman, Harry H.,Rodriques, Karen,Kucharczyk, Roman

, p. 6077 - 6080 (2007/10/02)

Teneraic acid, a naturally-occurring trans-2,6-piperidine dicarboxylic acid, has been synthesized using the imine-epoxide rearrangement.

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