18042-40-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 18042-40-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,0,4 and 2 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 18042-40:
(7*1)+(6*8)+(5*0)+(4*4)+(3*2)+(2*4)+(1*0)=85
85 % 10 = 5
So 18042-40-5 is a valid CAS Registry Number.