89721-50-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 89721-50-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,9,7,2 and 1 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 89721-50:
(7*8)+(6*9)+(5*7)+(4*2)+(3*1)+(2*5)+(1*0)=166
166 % 10 = 6
So 89721-50-6 is a valid CAS Registry Number.