78999-25-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 78999-25-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,8,9,9 and 9 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 78999-25:
(7*7)+(6*8)+(5*9)+(4*9)+(3*9)+(2*2)+(1*5)=214
214 % 10 = 4
So 78999-25-4 is a valid CAS Registry Number.