91958-89-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91958-89-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,9,5 and 8 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 91958-89:
(7*9)+(6*1)+(5*9)+(4*5)+(3*8)+(2*8)+(1*9)=183
183 % 10 = 3
So 91958-89-3 is a valid CAS Registry Number.