78542-13-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 78542-13-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,8,5,4 and 2 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 78542-13:
(7*7)+(6*8)+(5*5)+(4*4)+(3*2)+(2*1)+(1*3)=149
149 % 10 = 9
So 78542-13-9 is a valid CAS Registry Number.