666211-78-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 666211-78-5 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, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 666211-78:
(8*6)+(7*6)+(6*6)+(5*2)+(4*1)+(3*1)+(2*7)+(1*8)=165
165 % 10 = 5
So 666211-78-5 is a valid CAS Registry Number.