1431731-65-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1431731-65-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,3,1,7,3 and 1 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1431731-65:
(9*1)+(8*4)+(7*3)+(6*1)+(5*7)+(4*3)+(3*1)+(2*6)+(1*5)=135
135 % 10 = 5
So 1431731-65-5 is a valid CAS Registry Number.