17859-90-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 17859-90-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,7,8,5 and 9 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 17859-90:
(7*1)+(6*7)+(5*8)+(4*5)+(3*9)+(2*9)+(1*0)=154
154 % 10 = 4
So 17859-90-4 is a valid CAS Registry Number.