89723-15-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 89723-15-9 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 3 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 89723-15:
(7*8)+(6*9)+(5*7)+(4*2)+(3*3)+(2*1)+(1*5)=169
169 % 10 = 9
So 89723-15-9 is a valid CAS Registry Number.