65781-19-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 65781-19-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,5,7,8 and 1 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 65781-19:
(7*6)+(6*5)+(5*7)+(4*8)+(3*1)+(2*1)+(1*9)=153
153 % 10 = 3
So 65781-19-3 is a valid CAS Registry Number.