127840-17-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 127840-17-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,7,8,4 and 0 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 127840-17:
(8*1)+(7*2)+(6*7)+(5*8)+(4*4)+(3*0)+(2*1)+(1*7)=129
129 % 10 = 9
So 127840-17-9 is a valid CAS Registry Number.
127840-17-9Relevant articles and documents
A CHEMOENZYMATIC ACCESS TO OPTICALLY ACTIVE 1,2-EPOXIDES
Chen, Ching-Shih,Liu, Yeuk-Chuen
, p. 7165 - 7168 (2007/10/02)
Lipase-catalyzed transacylation in organic media was employed to produce optically active α-hydroxy tosylate which could be readily converted to the corresponding 1,2-epoxides with high optical purity.