660422-99-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 660422-99-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,0,4,2 and 2 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 660422-99:
(8*6)+(7*6)+(6*0)+(5*4)+(4*2)+(3*2)+(2*9)+(1*9)=151
151 % 10 = 1
So 660422-99-1 is a valid CAS Registry Number.