202118-50-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 202118-50-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,2,1,1 and 8 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 202118-50:
(8*2)+(7*0)+(6*2)+(5*1)+(4*1)+(3*8)+(2*5)+(1*0)=71
71 % 10 = 1
So 202118-50-1 is a valid CAS Registry Number.