1221590-31-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1221590-31-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,2,1,5,9 and 0 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1221590-31:
(9*1)+(8*2)+(7*2)+(6*1)+(5*5)+(4*9)+(3*0)+(2*3)+(1*1)=113
113 % 10 = 3
So 1221590-31-3 is a valid CAS Registry Number.