65780-89-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 65780-89-4 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 0 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 65780-89:
(7*6)+(6*5)+(5*7)+(4*8)+(3*0)+(2*8)+(1*9)=164
164 % 10 = 4
So 65780-89-4 is a valid CAS Registry Number.