23450-21-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 23450-21-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,3,4,5 and 0 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 23450-21:
(7*2)+(6*3)+(5*4)+(4*5)+(3*0)+(2*2)+(1*1)=77
77 % 10 = 7
So 23450-21-7 is a valid CAS Registry Number.