23902-18-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 23902-18-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,3,9,0 and 2 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 23902-18:
(7*2)+(6*3)+(5*9)+(4*0)+(3*2)+(2*1)+(1*8)=93
93 % 10 = 3
So 23902-18-3 is a valid CAS Registry Number.