20022-55-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20022-55-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,0,2 and 2 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 20022-55:
(7*2)+(6*0)+(5*0)+(4*2)+(3*2)+(2*5)+(1*5)=43
43 % 10 = 3
So 20022-55-3 is a valid CAS Registry Number.