173990-13-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 173990-13-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,3,9,9 and 0 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 173990-13:
(8*1)+(7*7)+(6*3)+(5*9)+(4*9)+(3*0)+(2*1)+(1*3)=161
161 % 10 = 1
So 173990-13-1 is a valid CAS Registry Number.