778531-86-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 778531-86-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,7,8,5,3 and 1 respectively; the second part has 2 digits, 8 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 778531-86:
(8*7)+(7*7)+(6*8)+(5*5)+(4*3)+(3*1)+(2*8)+(1*6)=215
215 % 10 = 5
So 778531-86-5 is a valid CAS Registry Number.