99758-87-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 99758-87-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,7,5 and 8 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 99758-87:
(7*9)+(6*9)+(5*7)+(4*5)+(3*8)+(2*8)+(1*7)=219
219 % 10 = 9
So 99758-87-9 is a valid CAS Registry Number.