666712-84-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 666712-84-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,6,7,1 and 2 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 666712-84:
(8*6)+(7*6)+(6*6)+(5*7)+(4*1)+(3*2)+(2*8)+(1*4)=191
191 % 10 = 1
So 666712-84-1 is a valid CAS Registry Number.