1203305-56-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1203305-56-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,0,3,3,0 and 5 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1203305-56:
(9*1)+(8*2)+(7*0)+(6*3)+(5*3)+(4*0)+(3*5)+(2*5)+(1*6)=89
89 % 10 = 9
So 1203305-56-9 is a valid CAS Registry Number.