2615-20-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2615-20-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,6,1 and 5 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 2615-20:
(6*2)+(5*6)+(4*1)+(3*5)+(2*2)+(1*0)=65
65 % 10 = 5
So 2615-20-5 is a valid CAS Registry Number.