170645-89-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 170645-89-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,0,6,4 and 5 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 170645-89:
(8*1)+(7*7)+(6*0)+(5*6)+(4*4)+(3*5)+(2*8)+(1*9)=143
143 % 10 = 3
So 170645-89-3 is a valid CAS Registry Number.