1802-41-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1802-41-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,8,0 and 2 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1802-41:
(6*1)+(5*8)+(4*0)+(3*2)+(2*4)+(1*1)=61
61 % 10 = 1
So 1802-41-1 is a valid CAS Registry Number.