97993-56-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 97993-56-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,7,9,9 and 3 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 97993-56:
(7*9)+(6*7)+(5*9)+(4*9)+(3*3)+(2*5)+(1*6)=211
211 % 10 = 1
So 97993-56-1 is a valid CAS Registry Number.