1820565-69-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1820565-69-2 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,8,2,0,5,6 and 5 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1820565-69:
(9*1)+(8*8)+(7*2)+(6*0)+(5*5)+(4*6)+(3*5)+(2*6)+(1*9)=172
172 % 10 = 2
So 1820565-69-2 is a valid CAS Registry Number.