99993-12-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 99993-12-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,9,9 and 3 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 99993-12:
(7*9)+(6*9)+(5*9)+(4*9)+(3*3)+(2*1)+(1*2)=211
211 % 10 = 1
So 99993-12-1 is a valid CAS Registry Number.