201612-59-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 201612-59-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,1,6,1 and 2 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 201612-59:
(8*2)+(7*0)+(6*1)+(5*6)+(4*1)+(3*2)+(2*5)+(1*9)=81
81 % 10 = 1
So 201612-59-1 is a valid CAS Registry Number.