216686-77-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 216686-77-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,6,6,8 and 6 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 216686-77:
(8*2)+(7*1)+(6*6)+(5*6)+(4*8)+(3*6)+(2*7)+(1*7)=160
160 % 10 = 0
So 216686-77-0 is a valid CAS Registry Number.