201851-17-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 201851-17-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,1,8,5 and 1 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 201851-17:
(8*2)+(7*0)+(6*1)+(5*8)+(4*5)+(3*1)+(2*1)+(1*7)=94
94 % 10 = 4
So 201851-17-4 is a valid CAS Registry Number.