23442-23-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 23442-23-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,3,4,4 and 2 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 23442-23:
(7*2)+(6*3)+(5*4)+(4*4)+(3*2)+(2*2)+(1*3)=81
81 % 10 = 1
So 23442-23-1 is a valid CAS Registry Number.