65981-33-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 65981-33-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,5,9,8 and 1 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 65981-33:
(7*6)+(6*5)+(5*9)+(4*8)+(3*1)+(2*3)+(1*3)=161
161 % 10 = 1
So 65981-33-1 is a valid CAS Registry Number.