671815-86-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 671815-86-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,7,1,8,1 and 5 respectively; the second part has 2 digits, 8 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 671815-86:
(8*6)+(7*7)+(6*1)+(5*8)+(4*1)+(3*5)+(2*8)+(1*6)=184
184 % 10 = 4
So 671815-86-4 is a valid CAS Registry Number.