7775-89-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7775-89-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,7,7 and 5 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 7775-89:
(6*7)+(5*7)+(4*7)+(3*5)+(2*8)+(1*9)=145
145 % 10 = 5
So 7775-89-5 is a valid CAS Registry Number.