1797-23-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1797-23-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,7,9 and 7 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1797-23:
(6*1)+(5*7)+(4*9)+(3*7)+(2*2)+(1*3)=105
105 % 10 = 5
So 1797-23-5 is a valid CAS Registry Number.