101993-91-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 101993-91-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,1,9,9 and 3 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 101993-91:
(8*1)+(7*0)+(6*1)+(5*9)+(4*9)+(3*3)+(2*9)+(1*1)=123
123 % 10 = 3
So 101993-91-3 is a valid CAS Registry Number.