1089174-21-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1089174-21-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,8,9,1,7 and 4 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1089174-21:
(9*1)+(8*0)+(7*8)+(6*9)+(5*1)+(4*7)+(3*4)+(2*2)+(1*1)=169
169 % 10 = 9
So 1089174-21-9 is a valid CAS Registry Number.