1291831-57-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1291831-57-6 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,9,1,8,3 and 1 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1291831-57:
(9*1)+(8*2)+(7*9)+(6*1)+(5*8)+(4*3)+(3*1)+(2*5)+(1*7)=166
166 % 10 = 6
So 1291831-57-6 is a valid CAS Registry Number.