133563-20-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 133563-20-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,5,6 and 3 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 133563-20:
(8*1)+(7*3)+(6*3)+(5*5)+(4*6)+(3*3)+(2*2)+(1*0)=109
109 % 10 = 9
So 133563-20-9 is a valid CAS Registry Number.