665016-59-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 665016-59-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,5,0,1 and 6 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 665016-59:
(8*6)+(7*6)+(6*5)+(5*0)+(4*1)+(3*6)+(2*5)+(1*9)=161
161 % 10 = 1
So 665016-59-1 is a valid CAS Registry Number.