20203-78-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20203-78-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,2,0 and 3 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 20203-78:
(7*2)+(6*0)+(5*2)+(4*0)+(3*3)+(2*7)+(1*8)=55
55 % 10 = 5
So 20203-78-5 is a valid CAS Registry Number.