78685-91-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 78685-91-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,8,6,8 and 5 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 78685-91:
(7*7)+(6*8)+(5*6)+(4*8)+(3*5)+(2*9)+(1*1)=193
193 % 10 = 3
So 78685-91-3 is a valid CAS Registry Number.