261943-57-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 261943-57-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,6,1,9,4 and 3 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 261943-57:
(8*2)+(7*6)+(6*1)+(5*9)+(4*4)+(3*3)+(2*5)+(1*7)=151
151 % 10 = 1
So 261943-57-1 is a valid CAS Registry Number.