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857894-31-6

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857894-31-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 857894-31-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,7,8,9 and 4 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 857894-31:
(8*8)+(7*5)+(6*7)+(5*8)+(4*9)+(3*4)+(2*3)+(1*1)=236
236 % 10 = 6
So 857894-31-6 is a valid CAS Registry Number.

857894-31-6Relevant articles and documents

Asymmetric synthesis of 2,4,5-trisubstituted piperidines from sulfinimine-derived δ-amino β-ketoesters. Formal synthesis of pseudodistomin B triacetate

Davis, Franklin A.,Zhang, Junyi,Li, Yingxin,Xu, He,DeBrosse, Charles

, p. 5413 - 5419 (2005)

N-Sulfinyl δ-amino β-ketoester enaminones, a new sulfinimine-derived chiral building block, undergoes, on hydrolysis in one pot, an intramolecular Michael addition followed by a retro-Michael-type elimination to give enantiopure 2,4,5-trisubstituted piper

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