170945-21-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 170945-21-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,0,9,4 and 5 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 170945-21:
(8*1)+(7*7)+(6*0)+(5*9)+(4*4)+(3*5)+(2*2)+(1*1)=138
138 % 10 = 8
So 170945-21-8 is a valid CAS Registry Number.