78439-78-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 78439-78-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,8,4,3 and 9 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 78439-78:
(7*7)+(6*8)+(5*4)+(4*3)+(3*9)+(2*7)+(1*8)=178
178 % 10 = 8
So 78439-78-8 is a valid CAS Registry Number.