175689-90-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 175689-90-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,5,6,8 and 9 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 175689-90:
(8*1)+(7*7)+(6*5)+(5*6)+(4*8)+(3*9)+(2*9)+(1*0)=194
194 % 10 = 4
So 175689-90-4 is a valid CAS Registry Number.