77597-98-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77597-98-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,5,9 and 7 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 77597-98:
(7*7)+(6*7)+(5*5)+(4*9)+(3*7)+(2*9)+(1*8)=199
199 % 10 = 9
So 77597-98-9 is a valid CAS Registry Number.