7620-18-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7620-18-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,6,2 and 0 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 7620-18:
(6*7)+(5*6)+(4*2)+(3*0)+(2*1)+(1*8)=90
90 % 10 = 0
So 7620-18-0 is a valid CAS Registry Number.