71961-30-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 71961-30-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,9,6 and 1 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 71961-30:
(7*7)+(6*1)+(5*9)+(4*6)+(3*1)+(2*3)+(1*0)=133
133 % 10 = 3
So 71961-30-3 is a valid CAS Registry Number.