2681-24-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2681-24-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,6,8 and 1 respectively; the second part has 2 digits, 2 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 2681-24:
(6*2)+(5*6)+(4*8)+(3*1)+(2*2)+(1*4)=85
85 % 10 = 5
So 2681-24-5 is a valid CAS Registry Number.