904689-17-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 904689-17-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,0,4,6,8 and 9 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 904689-17:
(8*9)+(7*0)+(6*4)+(5*6)+(4*8)+(3*9)+(2*1)+(1*7)=194
194 % 10 = 4
So 904689-17-4 is a valid CAS Registry Number.