89908-40-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 89908-40-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,9,9,0 and 8 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 89908-40:
(7*8)+(6*9)+(5*9)+(4*0)+(3*8)+(2*4)+(1*0)=187
187 % 10 = 7
So 89908-40-7 is a valid CAS Registry Number.