66408-39-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 66408-39-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,4,0 and 8 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 66408-39:
(7*6)+(6*6)+(5*4)+(4*0)+(3*8)+(2*3)+(1*9)=137
137 % 10 = 7
So 66408-39-7 is a valid CAS Registry Number.