78417-84-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 78417-84-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,8,4,1 and 7 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 78417-84:
(7*7)+(6*8)+(5*4)+(4*1)+(3*7)+(2*8)+(1*4)=162
162 % 10 = 2
So 78417-84-2 is a valid CAS Registry Number.