257938-69-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 257938-69-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,7,9,3 and 8 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 257938-69:
(8*2)+(7*5)+(6*7)+(5*9)+(4*3)+(3*8)+(2*6)+(1*9)=195
195 % 10 = 5
So 257938-69-5 is a valid CAS Registry Number.
257938-69-5Relevant academic research and scientific papers
Process and intermediates for preparation of substituted piperidines
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, (2008/06/13)
The present invention concerns intermediates useful in and a process for the preparation of a compound of formula 1 or a salt thereof comprising a) hydroboration of a compound of formula 2 A, R1and R2are as herein defined. These comp
