1231951-61-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1231951-61-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,3,1,9,5 and 1 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1231951-61:
(9*1)+(8*2)+(7*3)+(6*1)+(5*9)+(4*5)+(3*1)+(2*6)+(1*1)=133
133 % 10 = 3
So 1231951-61-3 is a valid CAS Registry Number.