18640-49-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 18640-49-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,6,4 and 0 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 18640-49:
(7*1)+(6*8)+(5*6)+(4*4)+(3*0)+(2*4)+(1*9)=118
118 % 10 = 8
So 18640-49-8 is a valid CAS Registry Number.