23802-57-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 23802-57-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,3,8,0 and 2 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 23802-57:
(7*2)+(6*3)+(5*8)+(4*0)+(3*2)+(2*5)+(1*7)=95
95 % 10 = 5
So 23802-57-5 is a valid CAS Registry Number.