666211-18-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 666211-18-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,6,2,1 and 1 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 666211-18:
(8*6)+(7*6)+(6*6)+(5*2)+(4*1)+(3*1)+(2*1)+(1*8)=153
153 % 10 = 3
So 666211-18-3 is a valid CAS Registry Number.