91993-70-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91993-70-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,9,9 and 3 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 91993-70:
(7*9)+(6*1)+(5*9)+(4*9)+(3*3)+(2*7)+(1*0)=173
173 % 10 = 3
So 91993-70-3 is a valid CAS Registry Number.