68780-91-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 68780-91-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,8,7,8 and 0 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 68780-91:
(7*6)+(6*8)+(5*7)+(4*8)+(3*0)+(2*9)+(1*1)=176
176 % 10 = 6
So 68780-91-6 is a valid CAS Registry Number.