15820-90-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 15820-90-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,5,8,2 and 0 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 15820-90:
(7*1)+(6*5)+(5*8)+(4*2)+(3*0)+(2*9)+(1*0)=103
103 % 10 = 3
So 15820-90-3 is a valid CAS Registry Number.