69720-78-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 69720-78-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,9,7,2 and 0 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 69720-78:
(7*6)+(6*9)+(5*7)+(4*2)+(3*0)+(2*7)+(1*8)=161
161 % 10 = 1
So 69720-78-1 is a valid CAS Registry Number.