201734-40-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 201734-40-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,1,7,3 and 4 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 201734-40:
(8*2)+(7*0)+(6*1)+(5*7)+(4*3)+(3*4)+(2*4)+(1*0)=89
89 % 10 = 9
So 201734-40-9 is a valid CAS Registry Number.