99758-91-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 99758-91-5 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, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 99758-91:
(7*9)+(6*9)+(5*7)+(4*5)+(3*8)+(2*9)+(1*1)=215
215 % 10 = 5
So 99758-91-5 is a valid CAS Registry Number.