78920-51-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 78920-51-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,8,9,2 and 0 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 78920-51:
(7*7)+(6*8)+(5*9)+(4*2)+(3*0)+(2*5)+(1*1)=161
161 % 10 = 1
So 78920-51-1 is a valid CAS Registry Number.