89977-93-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 89977-93-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,9,9,7 and 7 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 89977-93:
(7*8)+(6*9)+(5*9)+(4*7)+(3*7)+(2*9)+(1*3)=225
225 % 10 = 5
So 89977-93-5 is a valid CAS Registry Number.