662117-33-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 662117-33-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,2,1,1 and 7 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 662117-33:
(8*6)+(7*6)+(6*2)+(5*1)+(4*1)+(3*7)+(2*3)+(1*3)=141
141 % 10 = 1
So 662117-33-1 is a valid CAS Registry Number.