1431636-23-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1431636-23-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,3,1,6,3 and 6 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1431636-23:
(9*1)+(8*4)+(7*3)+(6*1)+(5*6)+(4*3)+(3*6)+(2*2)+(1*3)=135
135 % 10 = 5
So 1431636-23-5 is a valid CAS Registry Number.