1013023-55-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1013023-55-6 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,1,3,0,2 and 3 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1013023-55:
(9*1)+(8*0)+(7*1)+(6*3)+(5*0)+(4*2)+(3*3)+(2*5)+(1*5)=66
66 % 10 = 6
So 1013023-55-6 is a valid CAS Registry Number.
1013023-55-6Relevant articles and documents
PROCESS FOR THE PREPARATION OF MONTELUKAST, AND INTERMEDIATES THEREFOR
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Page/Page column 26, (2008/06/13)
The invention relates to processes for making montelukast and to intermediates for use in the process, in particular compounds of formulas 2-7: L=OAc, OTs, OTf5OMs; where X=Cl, Br, I.
