1820580-34-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1820580-34-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,8,2,0,5,8 and 0 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1820580-34:
(9*1)+(8*8)+(7*2)+(6*0)+(5*5)+(4*8)+(3*0)+(2*3)+(1*4)=154
154 % 10 = 4
So 1820580-34-4 is a valid CAS Registry Number.