12758-81-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 12758-81-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,2,7,5 and 8 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 12758-81:
(7*1)+(6*2)+(5*7)+(4*5)+(3*8)+(2*8)+(1*1)=115
115 % 10 = 5
So 12758-81-5 is a valid CAS Registry Number.