66398-74-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 66398-74-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,3,9 and 8 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 66398-74:
(7*6)+(6*6)+(5*3)+(4*9)+(3*8)+(2*7)+(1*4)=171
171 % 10 = 1
So 66398-74-1 is a valid CAS Registry Number.