97009-81-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 97009-81-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,7,0,0 and 9 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 97009-81:
(7*9)+(6*7)+(5*0)+(4*0)+(3*9)+(2*8)+(1*1)=149
149 % 10 = 9
So 97009-81-9 is a valid CAS Registry Number.