18758-81-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 18758-81-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,7,5 and 8 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 18758-81:
(7*1)+(6*8)+(5*7)+(4*5)+(3*8)+(2*8)+(1*1)=151
151 % 10 = 1
So 18758-81-1 is a valid CAS Registry Number.