19191-23-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19191-23-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,1,9 and 1 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 19191-23:
(7*1)+(6*9)+(5*1)+(4*9)+(3*1)+(2*2)+(1*3)=112
112 % 10 = 2
So 19191-23-2 is a valid CAS Registry Number.